Urbani izziv, volume 28, no. 2, 2017 110 UDC: 911.375.12:796.032.2(495Athens) DOI: 10.5379/urbani-izziv-en-2017-28-02-003 Received: 15 May 2017 Accepted: 22 Aug. 2017 Luca SALVATI Marco ZITTI Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) In the new context of contemporary cities, local com- petitiveness for financial resources has grown more than ever, resulting in cities characterised by important so- cioeconomic transformations. Earlier studies addressed the relation between urban expansion, socioeconomic development and mega-events only for specific areas and types of urban growth, often overlooking the role of mega-events in fuelling urban sprawl. As the host of the  2004 Olympic Games, Athens, Greece is a paradig- matic example for emerging cities hosting mega-events due to the close interconnection between the Olympics, infrastructure development and urban sprawl. This arti- cle connects the latent relationship between economic expansion driven by the Olympic Games and laissez-faire urbanism to the long-term unregulated urban expansion characterising Athens’s development. By providing room for the original wave of sprawl, the resulting socioeco- nomic context is interpreted as a signal of the weakness of the “competitive city” framework in poorly planned and long-deregulated urban contexts such as Athens. A com- prehensive analysis of recent phases of economic growth and discontinuous urban expansion thus provides further insight into understanding sprawl processes in today’s cit- ies, and helps distinguish the morphological patterns and socioeconomic dynamics that characterise urban expan- sion during sequential cycles of economic expansion and recession. Keywords: urban expansion, economic growth, infra- structure, agglomeration economies, tourism, Mediter- ranean uiiziv-28-2_02.indd 110 12.12.2017 7:50:14 Urbani izziv, volume 28, no. 2, 2017 111Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) 1 Introduction Urban growth is a global phenomenon that is manifested through various spatial forms and dynamics  (Angel et  al., 2011). Socioeconomic restructuring processes and the result- ing distribution of economic activities at the global scale sug- gest that the growth prospects of cities increasingly depend on their comparative advantages to attract investments and gener- ate local development opportunities (Bennet & Savani, 2003). Factors such as infrastructure and accessibility, industry and economic scale, human capital and labour force act as major determinants of urban competitiveness (Andersen et al., 2011). Policies to enhance the capacity of cities to attract businesses and labour have shaped regional and local policy in developed countries (OECD, 2006). In this new global competitive context and in the era of mass communication, the importance of mega-events, including the Olympic Games, expos and football world cups, has signifi- cantly scaled up (Chorianopoulos et al., 2010). The potential of hosting major events today lies in the global attention that a country and a city receive throughout the period, serving advertisement and promotion purposes (Delladetsima, 2006). Mega-events thus serve as a means for attracting human and financial investments from all over the world. Competitive- ness among cities hoping to host such events has increased greatly  (Phelps et  al., 2006). Cities have undergone radical changes, promoting intense infrastructure development, ur- ban re-qualification plans and the “construction of territorial specificities” with the final objective of enhancing the growth potential of the locality (Scott, 2001). To sum up, cities have been transforming at greater speeds in order to become more competitive for hosting mega-events. The shift toward a “competitive city” model is noticeable in two regulatory responses seeking to modify the competitive attributes of urban systems (Kresl, 2007). The first is demand- oriented actions, striving to respond to the attributes that firms are seeking from a particular location in order to operate. A key example of such a response is the construction of physical infrastructure designed to make the area more attractive for investment and favourable for the establishment and growth of local economic initiatives. The second regulatory response is profile development or enhancement strategies, aiming to differentiate a place from other investment choices by high- lighting its core benefits, style and culture. The promotion of rejuvenated urban profiles involves mobilising diverse policy tools and resources, including the preservation of architec- tural heritage sites, flagship property developments aimed at altering city-centre landscapes and hosting major cultural, entrepreneurial and sports events. In this respect, place market- ing considerations are now viewed as a fundamental part of land-use planning, guiding the development of places  (Ben- net & Savani, 2003). In the new context of entrepreneurial cities, local competi- tiveness for financial resources has grown more than ever, re- sulting in competitive cities characterised by morphological and functional transformations  (Di Feliciantonio  & Salvati, 2015). In this regard, mega-events are a strong means of self- promotion, and for this reason they have always been preceded by infrastructure development and strategies to enhance the profile of the host city (Longhi & Musolesi, 2007). However, the close relationship between mega-events, socioeconomic development and urban expansion was addressed only for specific areas and types of urban growth, often overlooking the role of mega-events in fuelling dispersed urbanisation and producing negative socio-environmental externalities  (Dura- Guimera, 2003). As the host of the 2004 Olympic Games, Athens is a paradigmatic example for Olympic cities due to the close interconnection between mega-events, infrastructure development and urban sprawl in a socioeconomic context characterised by long-term unregulated city expansion (Cho- rianopoulos et al., 2014). Athens’s bid for the Olympic Games was perceived as the will of the city to regain urban competitiveness (Gargiulo Morelli et  al., 2014). When Greece was awarded the games, several urban and infrastructure projects were launched. These sought to reduce economic marginality and improve the functional profile of the metropolis (Gospodini, 2006). The games acted as a catalyst to redirect spatial policy towards improving Ath- ens’s urban landscape  (Beriatos  & Gospodini, 2004). At the same time, the pre-crisis phase of urban expansion typical of Athens created an unsustainable path of local development possibly reducing (or even compromising) the capacity of the metropolitan system to effectively respond to the subsequent negative impacts of recession  (Gospodini, 2009). Based on these premises, this article discusses the latent relationship be- tween economic expansion driven by the Olympic Games and laissez-faire urbanism, identifying a massive process of sprawl, considered an early signal of the weakness of the competitive city framework in poorly planned and long-deregulated urban contexts  (Salvati et  al., 2016). A comprehensive analysis of recent phases of economic growth and discontinuous urban expansion provides further insight into the understanding of sprawl patterns and processes in today’s cities, and helps iden- tify the morphological transformations and socioeconomic dy- namics that characterise urbanisation paths in mixed cycles of economic expansion and recession. After a brief description of the long-term demographic and ur- ban development of the Athens metropolitan region (Section 2), four homogeneous phases of urban expansion are described uiiziv-28-2_02.indd 111 12.12.2017 7:50:14 Urbani izziv, volume 28, no. 2, 2017 112 L. SALVATI, M. ZITTI by reviewing empirical evidence presented in earlier studies. Section 3 then focuses on Athens’s development in the last dec- ade and the importance of the role played by the 2004 Olym- pics through a survey of recent literature on urban growth and sprawl in the Greek capital, coupled with additional analysis of material such as town plans, strategic guidelines for urban development and online newspaper articles. The implications of these global events in the new context of competitive cities is discussed in Section 4, presenting the urban transformations that cities are undergoing in order to increase their global com- petitiveness. The urban policies and strategies adopted by the Greek authorities before and immediately after the Olympics are briefly discussed in Section 5. The spatial consequences of these urban development plans are addressed in Section 6. In particular, special attention is given to the transformation of the Mesogeia Plain, one of the main areas of the region affected by Athens’s urban spillover, using statistical data provided by the Greek National Statistical Service and diachronic aerial photographs from Google Earth. 2 Athens’s expansion: a long urbanisation history The study area considered here is the administrative region of Attica in south-central Greece. Attica covers  3% of Greece’s area but contributes to almost half of its GDP  (Figure  1). In  2001 the greater metropolitan area of Attica had a popu- lation of about 3.5 million, which is 34% of the total popula- tion (Salvati, 2016). In the Greek urban system, Athens is the capital and by far the most important city, with a concentra- tion of all economic sectors and activities (especially high-level public administration, business headquarters and a wide array of services). However, Athens ranks low within the European urban system. According to various classifications of European cities, Athens is considered a peripheral city with a relatively low level of influence on both the Mediterranean region and, more generally, European dynamics (Rontos et al., 2016). Kostas Rontos and Luca Salvati (2014) identified four growth phases in Athens. The first phase (1850–1900) was character- Figure 1: Spatial distribution of basic land-use classes in the Athens metropolitan region (source: European Environment Agency, 2012). Built-up areas Agricultural areas Forests and other natural areas 0 5 10 kilometres N uiiziv-28-2_02.indd 112 12.12.2017 7:50:15 Urbani izziv, volume 28, no. 2, 2017 113 ised by a similar demographic expansion of urban and rural areas, resulting in quite a balanced distribution of population across regional territory. However, starting in the  1860s the growth rate of Athens began accelerating faster than the rest of Attica. The second phase  (1900–1940) saw the develop- ment of a compact polycentric configuration, based on the two main urban centres of Athens and Piraeus (Leontidou, 1990). Consolidating the role of Greek capital, greater Athens at- tracted industrialisation, especially in Piraeus, where the com- mercial port is located. Consequently, population growth rates in these two areas  (mainly determined by immigration flows from Asia Minor) were very high. New residents settled in unplanned suburbs in the surroundings of Athens and Piraeus. Even if these informal settlements were not exactly low-density, the first signs of urban sprawl were evident in this period. The third phase (1950–1980) was characterised by the progressive transformation of the traditional di-centric structure of Attica. Workers and lower-income strata, together with rural immi- grants, moved to the surroundings of Athens and Piraeus in search of affordable housing close to industries. Consequently, the difference between residential densities in the urban cen- tres and peripheries decreased rapidly. Furthermore, the ur- banisation of rural areas around Athens and Piraeus also took place in this phase, especially in the Mesogeia Plain. Urban depolarisation was mainly possible due to the infrastructure development of the region and the permissive urban policies and building code (Leontidou, 1996). Dispersed urbanisation grew in the fourth phase  (1980– 1990), when the middle-class and elite urban exodus became significant. Athens’s periphery, rural zones and coastal areas experienced rapid economic expansion during those years. The Athens urban area experienced growth and sprawl at the same time. The conclusion on the demographic and urban develop- ment of the region is that Greece’s traditional city-countryside polarisation radically changed during the twentieth century. The compact polycentric configuration of Attica based on the Piraeus-Athens polarity is progressively being replaced by a more scattered metropolitan structure  (Sayas, 2004, 2006; Polyzos et al., 2008; Salvati, 2013). 3 Competing for mega-events: early signs of a competitive city in Athens With about one-third of Greece’s population and over one- third of its total income, the Athens metropolitan region dominates the Greek urban system. However, for many dec- ades Athens had one of the lowest indicators of competi- tiveness in Europe due to a variety of factors related to its introverted economic trends, persistent social problems and outdated infrastructure (Prevelakis, 2000). The Olympics were therefore perceived as an opportunity to project a new “win- ner” profile for the capital and, in the words of the organisers, to prove to the world that the city also has a future alongside a glorious past. In this light, staging the games was perceived as a national rather than local effort  (Beriatos  & Gospodini, 2004). The central government reoriented regional policy towards this goal and allocated considerable funds to realise projects directly aimed at raising urban competitiveness (Cho- rianopoulos et al., 2010). Two key project categories resulted from this prioritisation. The first is projects aimed at improving the attractiveness of the urban area and the city’s capacity to act as an international ven- ue for year-round tourism  (examples include the unification of archaeological sites in the city’s historical centre, the regen- eration of the western waterfront area and the post-Olympic conversion of sporting facilities to convention, business and entertainment venues). The second category is projects to re- duce economic marginality and improve the functional aspects of the metropolitan area, focusing on telecommunication and transport infrastructure (examples are the new Athens under- ground, with its new Lines 2 and 3 and improvement of Line 1 with an extra lane, the suburban railway and tramway con- necting the city centre to the western waterfront, Eleftherios Venizelos International Airport and Athens’s ring road). The Olympic Games therefore acted as a catalyst for redirect- ing spatial policy toward the promotion of urban competi- tiveness (Gospodini, 2006). Leaving aside the discussion over the extent of economic growth of the city and country, we focus our attention on the effects that this spatial policy has had on the urban development of the area studied. Two major aspects played a crucial role in guiding urban development in the region: a)  the emergence of new spatial links via devel- opment of major transport projects establishing new connec- tions between peripheral areas, expanding the functional urban limits and transforming the geography of the metropolis, and b) changes in real estate dynamics, associated with a high level of infrastructure investment and major architectural works (Pa- nagiotis  & Tassos, 2004). The former aspect has contributed to an increase in the attractiveness of rural areas surrounding the central city  (infrastructure development has mainly been channelled into the Mesogeia Plain and along the eastern and western coast), and the latter aspect has determined clusters of culture and leisure epicentres characterised by innovative design and distinct architectural and urban morphology with international rather than local references (Beriatos & Gospod- ini, 2004). The emergence of developers’ consortiums, focusing on investment opportunities in large retail, offices, entertain- ment and housing estate projects, has progressively affected land prices, intensifying development pressures (Delladetsima, Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) uiiziv-28-2_02.indd 113 12.12.2017 7:50:15 Urbani izziv, volume 28, no. 2, 2017 114 2006). Infrastructure investment took place in various loca- tions around Athens. However, it was primarily channelled into the eastern part of the metropolis: namely, the Mesogeia Plain (Couch et al., 2007). 4 Infrastructure development and urban growth in Athens Lifestyle-related and infrastructure-driven sprawl are the two main factors underlying urban dispersion  (Richardson  & Chang-Hee, 2004; Bruegmann, 2005; Salvati  & Carlucci, 2016). Studying infrastructure development in the case of Attica is convenient for understanding past patterns of urban expansion and predicting future ones. Among the most impor- tant infrastructure typologies that determine the nature and characteristics of sprawl processes, airports, roads and under- ground lines play a pivotal role (Zagorianakos, 2004). The de- velopment of the first “urban rapid transit system” (Line 1) in greater Athens connected central Piraeus to central Athens and was inaugurated in 1869. This was one of the first underground systems in the world. Later, in 1957, Line 1 underwent rapid development, and today it extends 20 km from the southwest corner of greater Athens (Piraeus) to the northeast areas (Ki- fissia). In  1992, the Attiko Metro enterprise took over the manage- ment of the Athens metro system and began operations to build Lines  2 and  3 and upgrade Line  1. The total cost of these operations was approximately EUR  4.3  billion. Today, the Athens metro network extends more than  60  km and a new fourth line is under construction. The entire transit sys- tem in Athens was progressively transformed with the aim of serving as many areas of the Athens Basin as possible. Public transportation offers numerous benefits: speed, comfort, safety and reliability). The construction of Line 4 and the extensions planned for Lines 2 and 3 have greatly contributed to connect- ing peripheral areas in the northeast and south of greater Ath- ens with the urban centre. However, an indirect result has been the consolidation of a discontinuous urban fabric, especially in the northeastern districts of greater Athens. Moreover, it is reasonable to predict that urban sprawl will inevitably increase in those areas due to the expected increase in the desirability of these areas because of infrastructure development. Regarding the highway system, the A6 motorway  (the Attiki Odos) is a modern motorway extending 65 km. It constitutes the ring road of the greater metropolitan area of Athens and the core of the road network of the Attica region, connecting Eleftherios Venizelos International Airport in Spata to Corinth and Patras. The motorway was built with the main objectives of reducing traffic volume in the capital and the Athens Basin and contributing to physical planning and town planning de- velopment in the prefectures of Attica. With regard to the last two objectives, the A6 motorway plays a crucial role in shaping urban development in the peripheral areas of greater Athens and in the rest of Attica. The leapfrog and ribbon sprawl of the last decade can be considered largely due to highway develop- ment. Furthermore, the extension plan of the highway in the Mesogeia Plain (connecting the area to greater Athens through Mount Hymettus) is expected to contribute significantly to the diffused urbanisation of the plain (Chorianopoulos et al., 2014). 5 The Olympics bid and Athens’s chance at competitiveness: implications for urban sprawl Mega-events are clearly a great opportunity for regenerating the urban environment of a city. Nevertheless, if planning strategies are not correctly made, mega-events may impact negatively on the urban quality of the host city. In Athens, as in many other cities, the success of a strategic urban develop- ment plan may have been the root of problems arising from the revaluation of certain urban areas. According to Francisco- Javier Monclùs  (2003), the quickening of decentralising ten- dencies and the exponential increase in metropolitan mobil- ity correlates with considerable costs in energy, land use and commuting times. In contrast to the successful international experience of many cities in taking advantage of mega-events to regenerate large inner-city areas, Athens did not adopt such a strategy  (Petsimeris, 2008). Although there were sites in former industrial inner areas (such as the Eleonas area in the Municipality of Athens), projects for the 2004 Olympics were not clustered there but instead distributed throughout Attica. As a consequence, following Elias Beriatos and Aspasia Gos- podini  (2004), this pattern implies a strategy designed to promote multinucleated urban regeneration and develop- ment. Furthermore, several planned epicentres of culture and leisure constructed for the Olympic games, involving huge public funds, have failed to shape a new culture and leisure quarter in the city’s landscape because they have been scattered throughout Attica (Figure 2). Most of the athletic complexes have been complemented by other amenities, such as conven- tion and exhibition halls, commerce, entertainment, parks and promenades, with a view to improving the quality of urban space and the city’s profile. In this respect, they constitute clusters of culture and leisure  (Gospodini, 2001) dispersed throughout the metropolitan districts of Attica  (inner-city areas, peripheral urban areas and the suburban fringe). L. SALVATI, M. ZITTI uiiziv-28-2_02.indd 114 12.12.2017 7:50:15 Urbani izziv, volume 28, no. 2, 2017 115 Table 1 shows the percent change of land values over two ref- erence periods  (1997–2000 and 2004–2009) in Greece, in Attica and in its four prefectures (Athens, Piraeus, West Attica and East Attica). Land values evidently increased in all zones investigated in both reference periods. However, the observed increase was greatest in the period  1997–2000 for all zones except the Prefecture of Piraeus, probably the most compact in the study area. Furthermore, it should be emphasized that in both periods the increase in land value in the Prefecture of East Attica (the Mesogeia district), where urbanisation has mostly concentrated in the last decades, has been particularly consistent. The most interesting results are obtained by observ- ing the evolution of land values as an absolute deviation from what was observed for the Prefecture of Athens, which has always been the most expensive area of the country. These dif- ferences significantly increased for all of the areas investigated between  2004 and  2009, except for the Prefecture of West Attica, which has practically remained constant throughout the period. This observation may lead to the conclusion that land values across Attica are becoming more homogeneous with time. Demand for areas outside the Prefecture of Athens gradually grew as urbanisation and infrastructure development proceeded in Attica (Panagiotis & Tassos, 2004). Leapfrog and ribbon sprawl have been significantly encour- aged by the dispersal of Olympic venues across the region thanks to the development of the transport sector, above all in the Mesogeia Plain. These typologies of sprawl, indirectly Olympic venues 1. Thrakomakedones Olympic village 2. Maroussi Olympic sports complex 3. Peristeri boxing hall 4. Galatsi Olympic hall 5. Goudi Olympic complex 6. Nikaia weightlifting hall 7. Faliro coastal zone 8. Elliniko Olympic complex 9. Vouliagmeni Olympic centre 10. Markoupoulo shooting centre 11. Markoupoulo equestrian centre 12. Schinias rowing centre 13. Parnitha mountain bike venue 14. Ano Liossia hall 15. Agios Kosmas Olympic Sailing Centre 16. Karaiskaki stadium 17. Panathinaikos stadium Figure 2: Olympic venues in greater Athens; venues no. 10 and 11 are located in the Mesogeia Plain (source: Google Earth, 2010). Table 1: Land value percent change by area and reference period (source: Greek National Statistical Office, 2014). Area % change Difference from Athens 1997–2000 2004–2009 2004 2009 Total Greece 51.9 17.7 0.7 0.8 Attica 40.6 10.5 1.0 0.9 Prefecture of Athens 122.7 7.8 1.0 1.0 Prefecture of East Attica 23.5 20.9 0.8 0.9 Prefecture of West Attica 8.3 5.5 0.6 0.6 Prefecture of Piraeus 8.1 12.6 0.8 0.8 Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) uiiziv-28-2_02.indd 115 12.12.2017 7:50:16 Urbani izziv, volume 28, no. 2, 2017 116 driven by sports installations, gave Attica a multi-nucleated spatial configuration, with the formation of clusters around districts that followed a laissez-faire spatial development pro- gram in contrast to the expectation of Athens’s strategic master plan (Figure 3). The formation of a multi-nucleated territorial asset is particularly evident in the case of the Mesogeia Plain, a vast area that extends east of the Athens conurbation. Mount Hymettus to the west of the area acts as a physical barrier sepa- rating the plain from the main conurbation. The beginning of the transformation of the Mesogeia Plain started in the 1980s, when the decision was made to relocate the city’s international airport to the area. Subsequent appropriation of agricultural land for airport construction was followed by further infra- structure investment, which was made possible by funds for the Olympic Games. The construction of new roads and rail links connecting the airport with the city significantly improved the area’s accessibility. The picture was completed with the con- struction of two major Olympic venues (the Equestrian Centre and the Shooting Centre, both near the town of Markopoulo), again built on appropriated agricultural land. Urban expansion in the Mesogeia Plain has been unplanned and greatly influenced by the infrastructure development of the area. The concentration of industrial activities, major in- vestments in transport infrastructure for connecting the area to the rest of Attica and the relatively low costs of land have made the Mesogeia Plain extremely convenient for building activi- ties and suburban growth (Chorianopoulos et al., 2014). As a result, the area’s population grew by 26,207 during the 1980s and  38,737 in the  1990s. The number of households in the Mesogeia Plain increased from  15,800 in  1981 to  37,117 in  2001  (+135%), whereas the average household size fell from  3.3 to only  1.3 residents in  2001. In the same period, the population of greater Athens was decreasing in contrast to the inverse trend in its surroundings (Couch et al., 2007). To identify the socioeconomic consequences deriving from such infrastructure investment activity, a comprehensive spa- tial planning study of the Mesogeia Plain was commissioned in the early 1990s. The study led to the creation of new land-use regulations for the area, including subdivision and building restrictions that were activated as late as 2003, a year before the games commenced and almost two decades after the adoption of the Athens Strategic Master Plan (Giannakourou, 2005). At that time, the extent of new urban land use that corresponded to large-scale infrastructure projects amounted to 15% of total land use in the Mesogeia Plain. More than 50% of new urban land use materialised in areas designated as protected  (green zones or agricultural land). Such zones consumed up to 10% of the Mesogeia Plain and exhibited the highest rate of increase in urban land use. Moreover, built-up land expanded in both old and newly designated industrial zones, suggesting a trend towards the location of productive activities in the area. Less than 15% of new urban land use took place in areas regulated by structural urban plans. This category also showed the lowest rate of increase in urban land use among all Mesogeia Plain planning zones (Chorianopoulos et al., 2010). 6 Outcomes of a competitive city: The Olympic sprawl wave in Athens Athens is a typical example of the Mediterranean city arche- type, with urban development having long been mostly un- planned and spontaneous (Carlucci et al., 2017). Because it is representative of southern European urban areas still present- ing a moderate demographic increase and over-urbanisation, Athens’s expansion exemplifies the complex relationship be- tween mega-events and sprawl (Ioannidis et al., 2009). Based on extensive knowledge about pre-Olympic sprawl processes in the area (Leontidou, 1996; Maloutas, 2007; Arapoglou & Sayas, 2009; Chorianopoulos et  al., 2014), a review of the various modalities and dynamics of sprawl in the case of a b Figure  3: Urban development next to the Olympic Schinias rowing centre: a)  in April 2004 and b)  in June 2010; leapfrog development is characterised by isolated settlements and small urban nuclei ex- panding in rural environments. Ribbon sprawl is a typical expansion mode along roads and other infrastructure networks (source: Google Earth, 2012). L. SALVATI, M. ZITTI uiiziv-28-2_02.indd 116 12.12.2017 7:50:16 Urbani izziv, volume 28, no. 2, 2017 117 Attica is presented here, identifying four processes typical of the Olympic phase of urban expansion based on distinct so- cioeconomic dynamics at the local scale: a)  leapfrogging ex- pansion, b)  metropolitan periphery industrial development, c)  ribbon development and d)  second home conversion into primary residences. There are many cases of urban sprawl leapfrogging to places outside the conurbation but still remaining within commuting distance. Examples of sprawl attached to existing villages away from the city, around “green villages,” along seashore towns or related to “action planning legislation” can be seen throughout Attica. Leapfrogging urban sprawl was usually associated with the construction of mega-structures or industrial sites. For this reason, the  2004 Olympic Games, with all the work carried out for such a mega-event, greatly intensified this typology of sprawl. For example, the construction of the Olympic Vil- lage was another case of leapfrogging over still-undeveloped land, and it is becoming a remote but upscale housing complex for workers. For various reasons, sprawl by other population groups has emerged next to major Olympic infrastructures and in other parts of Athens’s periphery (Emmanuel, 2004). Regarding regional industrial development, factories first ap- peared in Athens’s periphery on the borders between northern Attica and Boeotia. This suburban manufacturing growth ini- tially took place spontaneously in clusters near major transport arteries (Kourliouros, 1997). Sprawl followed this process with the migration of workers to peri-urban industrial spaces in the Mesogeia Plain and outside Attica (along the national highway from Athens to Lamia in the north and along the highway from Athens to Corinth in the southwest). Hybrid landscapes were the result of the coexistence of rural/urban and residen- tial/industrial/commercial land use. It may be argued that this typology of sprawl is morphologically similar to ribbon development sprawl. Nonetheless, it has been separated from the latter because it has different causes. Concerning ribbon development and post-suburbia, in the first post-war decades agricultural land urbanisation was con- trolled by building regulations adopted by city plans. These plans allowed the development of several urban uses (housing, industrial and commercial) along transport axes, determining a narrow strip form of sprawl (Economou, 1997). This is a type of infrastructure-driven sprawl in which transport routes play a dominant role. Increasing car ownership meant that houses would be sellable even though they might be remote from shops and other services. The actors that initiated it were various decentralising land-intensive and transport-dependent urban activities such as branch plants, warehouses, commer- cial exhibition centres and superstores. Zoning arrangements or other forms of regulations for land-use control did not exist in such ribbon development, thus producing clusters or districts of similar activities highly dependent on transport systems  (Coccossis et  al., 2005). This typology of urban de- velopment led to progressive abandonment of the compact city tradition typical of the Mediterranean region  (Economidou, 1993). A special case of ribbon development occurred when the east and west coasts of Attica were connected with the inner city. Many middle-class residents of the city owned second homes on the periphery of the city close to the coast so that they could spend free time in quiet areas near the sea (Sayas, 2006). As transport infrastructure developed, these areas be- came more accessible from the city centre, making commuting possible (Couch et al., 2007). Thus, peripheral centres turned from summer locations into primary residences for middle- and upper-class groups. As European integration proceeded, and especially after the Maastricht Treaty, affluent populations migrated beyond cities and national borders for seasonal pe- riods. This seasonal migration phenomenon was also signifi- cantly scaled up with the arrival of low-cost airlines, which made travel affordable for larger groups of individuals. As a consequence, the Mediterranean coasts experienced a wave of residential tourism from north-south migrants, creat- ing a sort of long-distance sprawl. Greece, together with Spain and Italy, is a favourite Mediterranean destination for seasonal migrants. The Athens 2004 Olympic Games greatly stimulated tourism to the country, and German, British and Austrian citi- zens purchased houses along the coasts of Attica. Nearly 30% of new housing in this area has been acquired by foreigners, and international investors predict that there will be demand for one million houses for tourists in the near future (Couch et al., 2007). 7 Discussion To understand the socioeconomic dynamics and morphologi- cal characteristics of the most recent sprawl wave of Mediter- ranean urbanisation, this study focused on the urban spillover typical of Olympic Athens, with the 2004 games having played a crucial role in shaping the sprawl dynamics of the region. The interest in providing a detailed analysis of Athens’s recent development – as a representative example of Mediterranean cities attracting more population than jobs  –  derives from various reasons (Allen et al., 2004). Athens’s urban expansion has been widely recognised as a typical example of the recent socioeconomic trajectories followed by southern European cit- ies, which are now experiencing a transformation from com- pact development to sprawl and, possibly, polycentric expan- sion  (Turok  & Mychnenko, 2007). Until the  1990s Athens was considered a compact city, but today the city is attracting Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) uiiziv-28-2_02.indd 117 12.12.2017 7:50:16 Urbani izziv, volume 28, no. 2, 2017 118 the attention of scholars for its progressive deviation towards sprawling patterns of urbanisation. Understanding the reasons and causes behind this transition from compact development to the current spillover process is important for better under- standing future urban patterns in the Mediterranean region and, possibly, all over Europe. A further characteristic of the Mediterranean city that is par- ticularly evident in Athens is the unplanned mode of its ex- pansion (Vaiou, 1997). In most Mediterranean cities urbanisa- tion has not been preceded by legislation for spatial allocation, land use and settlement, as in the rest of Europe. Furthermore, Athens is one of the few large European urban areas mani- festing, at least up to the late 2000s, an intense demographic increase, followed by a drastic over-urbanisation process that has transformed the typical rural landscape surrounding the central city (Weber et al., 2005). For these reasons, now more than ever, the area requires a detailed spatial analysis in or- der to use appropriate policy strategies to control a process of dispersed urban expansion that is particularly recent and intense (Kasanko et al., 2006; Schneider & Woodcock, 2008; Salvati, 2014). Finally, Athens is a good example for discussing the importance of mega-events in the new context of city regions. In addition to placing Greece in the world’s eyes, the Olympic Games made the city an example for studying how new competitive city dynamics influence urbanisation processes (Gospodini, 2009). The works carried out for mega-events in Attica have had two main consequences: the emergence of new spatial links  (in- cluding the expansion of the functional urban limits) and changes in real estate dynamics  (raising values of rural and peripheral land). Furthermore, these interventions have been distributed throughout the Athens urban area, determining a sort of multi-nucleated urban regeneration programme (Gos- podini, 2006). Consequently, ribbon and leapfrog sprawl pat- terns have been encouraged, thus contributing to the spillover process of Athens. Urban sprawl has been most evident in the Mesogeia Plain, an area traditionally dedicated to agricultural activities. The overall result is an increase in urban land use around industrial sites and Olympic venues  (e.g.,  the shoot- ing and equestrian centre), in designated protected areas and along major transport infrastructure. Furthermore, an intense demographic increase has been registered in the area, together with a decrease in the average household size. Leapfrogging sprawl spatial patterns have mainly been ob- served in Attica. Many of these small sub-centres separated from the city (although connected by roads and railways) have developed around Olympic venues. Other “sub-types” of leap- frog development have been observed, such as new settlements created by interest groups and urban clusters around industrial sites. Ribbon development is another common sprawl pattern that has been noticed throughout the region. Strip develop- ments have sprung up along major transport axes, such as the A6 motorway. This suggests that infrastructure-driven sprawl is a dominant form of recent urban expansion in Athens. This pattern has been significantly influenced by the decentralisa- tion of land-intensive and transport-dependent activities, including industries and commercial centres. A sub-type of ribbon sprawl that has also been observed is the conversion of second homes to primary residences. As the connection between coastal areas and the city improved, many middle- class residents of the metropolis with seasonal vacation houses decided to convert them into their primary residences. Con- sequently, former vacation localities have undergone radical socioeconomic transformation towards urban use. There is general agreement on the fact that the modalities with which Athens’s urban development occurred throughout the twentieth century reflect both direct causes and indirect fac- tors, as already observed elsewhere (e.g., Arbaci, 2008; Catalàn et  al., 2008; Terzi  & Bolen, 2009; Bayona-Carrasco  & Gil- Alonso, 2012; Litynski, 2016; Salvati  & Carlucci, 2016). As a consequence of the morphological characteristics of Greek territory, the urban system of the country has been charac- terised by a persistent urban-rural polarisation  (Costa et  al., 1991). Nevertheless, the traditional relationship between ur- ban and rural areas in Greece rapidly transformed through- out the twentieth century. This transformation, stimulated by the capital’s economic development, its peculiar dimensions, significant waves of immigration, a weak planning system combined with a “permissive” building code and the infra- structure development of the region, has modified the spatial assets of the Attica region, resulting in a progressive (and dis- continuous) urbanisation of the surrounding areas of greater Athens (Di Feliciantonio & Salvati, 2015). Consequently, this is contributing to the gradual decline of the urban-rural polar- ity, typical of the Mediterranean tradition. Showing similar traits as Spanish, Portuguese and Italian cities, its economic structures in the post-war period of rapid urbanisation were based on urbanisation economies triggering sparse industri- alisation  (Carlucci et  al., 2017). As a result, the city did not experience the usual deindustrialisation/dis-urbanisation wave often noted in northern European cities since the  1970s. It has continued to show population gains, displaying a distinct lifecycle model (Gargiulo Morelli et al., 2014). At the same time, in most Mediterranean cities urbanisation has not been preceded by legislation for spatial allocation, land use and urban settlement, as in the rest of Europe (Coccossis et al., 2005). Urban development has mainly occurred through L. SALVATI, M. ZITTI uiiziv-28-2_02.indd 118 12.12.2017 7:50:16 Urbani izziv, volume 28, no. 2, 2017 119 illegal self-built housing sprawling onto cheap suburban land with severe infrastructure deficiencies (Economou, 1997). This has led to the social exclusion and vulnerability of the residents of such areas (Emmanuel, 2004). In this line of thinking, the recent growth trajectory in Athens supports the argument of “individualised urban development” because it portrays a city that continues to grow in an unplanned manner, based on small, self-financed property development schemes, with lim- ited public expenditure for urban infrastructure mainly based on sporadic (albeit important) events (Couch et al., 2007). 8 Conclusion The socioeconomic context characterising the latent rela- tionship between economic growth stimulated by the 2004 Olympics and a laissez-faire urbanism wave contributing to Athens’s sprawled expansion may be interpreted as a signal of the weakness of the competitive city framework in poorly planned and long-deregulated urban contexts. A compre- hensive analysis of recent phases of economic growth and discontinuous urban expansion provides further insight into understanding the complex mechanisms of dispersed urbanisa- tion in the contemporary metropolitan region. In this way, the new transforming territorial organisation of Attica stimulates re-thinking of the roles played by metropolitan areas. Attica is located at the centre of communication routes between the northern typically industrial part of the country, the western and southern areas characterised by a strong agricultural activi- ties and the tourism-oriented Aegean islands. Should Attica instead of Athens be considered the new capital of Greece? Is this a simple process of urban spillover that occupies residual free space with respect for geographical constraints, or is it the effect of an urban relocation process that connects the entire region in a complex network, irrespective of metropolitan hier- archies, spatial contiguity, functional productive sites and dif- ferent allocations of land? In this sense, the rules of a complex Mediterranean region in transition will be dictated by the new Attica region and no longer by Athens alone, suggesting that policies governing the metropolitan area will play a relevant role. Contrary to what was achieved for the Olympic instal- lations, regional planning should abandon the orientation toward specific actions in sparse areas  –  sometimes dictated by emergency conditions  –  to regain a visionary programme for the Athens region that could be a model strategy for the future development of several Mediterranean cities between economic growth and urban decline. Luca Salvati Council for Agricultural Research and Economics (CREA), Arezzo, Italy E-mail: luca.salvati@crea.gov.it Marco Zitti Sapienza University of Rome, Rome, Italy E-mail: marcozitti@libero.it References Allen, J., Barlow, J., Leal, J., Maloutas, T. & Padovani, L.  (2004) Housing in southern Europe. London, Blackwell. DOI: 10.1002/9780470757536 Andersen, H. T., Møller-Jensen, L. & Engelstoft, S.  (2011) The end of urbanization? Towards a new urban concept or rethinking urbanization. European Planning Studies, 19(4), pp. 595–611. DOI: 10.1080/09654313.2011.548472 Angel, S., Parent, J., Civco, D. L., Blei, A. & Potere, D.  (2011) The dimen- sions of global urban expansion: Estimates and projections for all countries, 2000–2050. Progress in Planning, 75(2), pp. 53–107. DOI: 10.1016/j.progress.2011.04.001 Arapoglou, V. P. & Sayas, J.  (2009) New facets of urban segregation in southern Europe. European Urban and Regional Studies, 16(4), pp. 345– 362. DOI: 10.1177/0969776409340187 Arbaci, S.  (2008) (Re)viewing ethnic residential segregation in southern European cities: Housing and urban regimes as mecha- nisms of marginalisation. Housing Studies, 23(4), pp. 589–613. DOI: 10.1080/02673030802117050 Bayona-Carrasco, J. & Gil-Alonso, F.  (2012) Suburbanisation and in- ternational immigration: The case of the Barcelona Metropolitan Re- gion (1998–2009). Tijdschrift voor Economische en Sociale Geographie, 103(3), pp. 312–329. DOI: 10.1111/j.1467-9663.2011.00687.x Bennett, R. & Savani, S.  (2003) The rebranding of city places: An inter- national comparative investigation. International Public Management Review, 4(2), pp. 70–87. Beriatos, E. & Gospodini, A.  (2004) Glocalising urban landscapes: Athens and the 2004 Olympics. Cities, 21(3), pp. 187–202. DOI: 10.1016/j.cities.2004.03.004 Bruegmann, R.  (2005) Sprawl: A compact history. Chicago, University of Chicago Press. DOI: 10.7208/chicago/9780226076973.001.0001 Carlucci, M., Grigoriadis, E., Rontos, K. & Salvati, L.  (2017) Revisiting a hegemonic concept: Long-term “Mediterranean urbanization” in be- tween city re-polarization and metropolitan decline. Applied Spatial Analysis and Policy, 10(3), pp. 347–362. DOI: 10.1007/s12061-016-9186-2 Catalàn, B., Sauri, D. & Serra, P.  (2008) Urban sprawl in the Mediter- ranean? Patterns of growth and change in the Barcelona metropolitan region 1993–2000. Landscape and Urban Planning, 85(3–4), pp. 174–184. Chorianopoulos, I., Pagonis, T., Koukoulas, S. & Drymoniti, S.  (2010) Planning, competitiveness and sprawl in the Mediterranean city: The case of Athens. Cities, 27(4), pp. 249–259. DOI: 10.1016/j.cities.2009.12.011 Chorianopoulos, I., Tsilimigkas, G., Koukoulas, S. & Balatsos, T.  (2014) The shift to competitiveness and a new phase of sprawl in the Mediter- ranean city: Enterprises guiding growth in Messoghia – Athens. Cities, 39, pp. 133–143. DOI: 10.1016/j.cities.2014.03.005 Coccossis, H., Economou, D. & Petrakos, G.  (2005) The ESDP relevance to a distant partner: Greece. European Planning Studies, 13(2), pp. 253– 264. DOI: 10.1080/0965431042000321811 Costa, F. J., Noble, A. G. & Pendeleton, G.  (1991) Evolving planning systems in Madrid, Rome, and Athens. Geojournal, 24(3), pp. 293–303. DOI: 10.1007/BF00189030 Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) uiiziv-28-2_02.indd 119 12.12.2017 7:50:16 Urbani izziv, volume 28, no. 2, 2017 120 Couch, C., Petschel-Held, G. & Leontidou, L.  (2007) Urban sprawl in Europe: Landscapes, land-use change and policy. Oxford, Blackwell. DOI: 10.1002/9780470692066 Delladetsima, P.  (2006) The emerging property development pattern in Greece and its impact on spatial development. European Urban and Regional Studies, 13(3), pp. 245–278. DOI: 10.1177/0969776406065428 Di Feliciantonio, C. & Salvati, L.  (2015) “Southern” alternatives of urban diffusion: Investigating settlement characteristics and socioeconomic patterns in three Mediterranean regions. Tijdschrift voor Economische en Sociale Geografie, 106(4), pp. 453–470. DOI: 10.1111/tesg.12102 Dura-Guimera, A.  (2003) Population deconcentration and social re- structuring in Barcelona, a European Mediterranean city. Cities, 20(6), pp. 387–394. DOI: 10.1016/j.cities.2003.08.004 Economidou, E.  (1993) The Attic landscape throughout the centuries and its human degradation. Landscape and Urban Planning, 24(1), pp. 33–37. DOI: 10.1016/0169-2046(93)90079-S Economou, D.  (1997) The planning system and rural land use control in Greece: A European perspective. European Planning Studies, 5(4), pp. 461–476. DOI: 10.1080/09654319708720412 Emmanuel, D.  (2004) Socio-economics inequalities and housing in Ath- ens: Impacts of the monetary revolution of the 1990s. The Greek Review of Social Research, 113(A), pp. 121–143. DOI: 10.12681/grsr.9355 European Environment Agency (2012) CORINE Land Cover geospatial database. Available at: http://land.copernicus.eu/pan-european/corine- land-cover/view (accessed 11 May 2017). Gargiulo Morelli, V., Rontos, K. & Salvati, L.  (2014) Between suburbanisa- tion and re-urbanisation? Revisiting the urban life cycle in a Mediterra- nean compact city. Urban Research and Practice, 7(1), pp. 74–88. DOI: 10.1080/17535069.2014.885744 Giannakourou, G.  (2005) Transforming spatial planning policy in Medi- terranean countries. Europeanization and domestic change. European Planning Studies, 13(2), pp. 253–264. DOI: 10.1080/0365431042000321857 Google Earth (2010) Pro images collection. Available at: https://www. google.it/intl/it/earth/ (accessed 11 May 2017). Google Earth (2012) Pro images collection. Available at: https://www. google.it/intl/it/earth/ (accessed 11 May 2017). Gospodini, A.  (2001) Urban waterfront redevelopment in Greek cities. Cities, 18(5), pp. 285–295. DOI: 10.1016/S0264-2751(01)00022-1 Gospodini, A.  (2006) Portraying, classifying and understanding the emerging landscapes in the post-industrial city. Cities, 23(5), pp. 311– 330. DOI: 10.1016/j.cities.2006.06.002 Gospodini, A.  (2009) Post-industrial trajectories of Mediterranean Euro- pean cities: The case of post-Olympics Athens. Urban Studies, 46(5–6), pp. 1157–1186. DOI: 10.1177/0042098009103859 Greek National Statistical Office (2014) Population and housing cenzus. Available at: http://www.statistics.gr (accessed 11 May 2017). Ioannidis, C., Psaltis, C. & Potsiou, C.  (2009) Towards a strategy for control of suburban informal buildings through automatic change detection. Computers, Environment and Urban Systems, 33(1), pp. 64–74. DOI: 10.1016/j.compenvurbsys.2008.09.010 Kasanko, M., Barredo, J. I., Lavalle, C., McCormick, N., Demicheli, L., Sagris, V., et al.  (2006) Are European cities becoming dispersed? A com- parative analysis of fifteen European urban areas. Landscape and Urban Planning, 77(1–2), pp. 111–130. DOI: 10.1016/j.landurbplan.2005.02.003 Kourliouros, E.  (1997) Planning industrial location in Greater Athens: The interaction between deindustrialization and anti-industrialism during the 1980s. European Planning Studies, 5(4), pp. 435–460. DOI: 10.1080/09654319708720411 Kresl, P. K.  (2007) Planning cities for the future. The successes and failures of urban economic strategies in Europe. Cheltenham, UK, Edward Elgar. DOI: 10.4337/9781847204332 Leontidou, L.  (1990) The Mediterranean city in transition. Cambridge, Cambridge University Press. DOI: 10.1017/CBO9780511522208 Leontidou, L.  (1996) Alternatives to modernism in (southern) urban theory: Exploring in-between spaces. International Journal of Urban and Regional Research, 20(2), pp. 180–197. DOI: 10.1111/j.1468-2427.1996.tb00310.x Litynski, P.  (2016) The correlation between urban sprawl and the local economy in Poland. Urbani izziv, 27(2), pp. 86–96. Longhi, C. & Musolesi, A.  (2007) European cities in the process of eco- nomic integration: Towards structural convergence. Annals of Regional Science, 41(2), pp. 333–351. DOI: 10.1007/s00168-006-0104-4 Maloutas, T.  (2007) Segregation, social polarization and immigration in Athens during the 1990s: Theoretical expectations and contextual difference. International Journal of Urban and Regional Research, 31(4), pp. 733–758. DOI: 10.1111/j.1468-2427.2007.00760.x Monclùs, F. J.  (2003) El “Modelo Barcelona” ¿Una fórmula original? De la “reconstrucción” a los proyectos urbanos estratégicos. Urban Perspec- tives, 3, pp. 1–13. OECD (Organisation for Economic Co-operation and Develop- ment) (2006) Competitive cities in the global economy. Paris. Panagiotis, Z. & Tassos, L.  (2004) The impact of the Athens 2004 Olym- pic games on real estate value in Greece. Journal of Property Tax Assess- ment and Administration, 1(3), pp. 5–20. Petsimeris, P.  (2008) Playing with scales: Doxiadis legacy in urban theo- ry and practice. Ekistics, 442, pp. 326–352. Phelps, N. A., Parsons, N., Ballas, D. & Dowling, A.  (2006) Post-suburban Europe: Planning and politics at the margins of Europe’s capital cities. Basingstoke, UK, Palgrave Macmillan. DOI: 10.1057/9780230625389 Polyzos, S., Christopoulou, O., Minetos, D. & Leal Filho, W. (2008) An overview of urban-rural land use interactions in Greece. International Journal of Agricultural Resources, Governance and Ecology, 7(3), pp. 276– 296. DOI: 10.1504/IJARGE.2008.018330 Prevelakis, G.  (2000) Athenes. Urbanism, culture et politique. Paris, L’Harmattan. Richardson, H. W. & Chang-Hee, C. B.  (2004) Urban sprawl in Western Europe and the United States. London, Ashgate. Rontos, K., Grigoriadis, S., Sateriano, A., Syrmali, M., Vavouras, I. & Sal- vati, L.  (2016) Lost in protest, found in segregation: Divided cities in the light of the 2015 “Oki” referendum in Greece. City, Culture and Society, 7(3), pp. 139–148. DOI: 10.1016/j.ccs.2016.05.006 Rontos, K. & Salvati, L.  (2014) Is the ratio of present to resident popula- tion a proxy for urban diffusion? A case study. International Journal of Ecological and Economic Statistics, 32(1), pp. 75–82. Salvati, L.  (2013) Exploring the spatial pattern of soil sealing in a Medi- terranean peri-urban area. Journal of Environmental Planning and Man- agement, 57(6), pp. 848–861. DOI: 10.1080/09640568.2013.770730 Salvati, L.  (2014) Towards a polycentric region? The socioeconomic trajectory of Rome, an “ethernal” Mediterranean city. Tijdschrift voor Economische en Sociale Geografie, 105(3), pp. 268–284. DOI: 10.1111/tesg.12054 L. SALVATI, M. ZITTI uiiziv-28-2_02.indd 120 12.12.2017 7:50:17 Urbani izziv, volume 28, no. 2, 2017 121 Salvati, L.  (2016) The dark side of the crisis: Disparities in per-capita income (2000–2012) and the urban-rural gradient in Greece. Tijd- schrift voor Economische en Sociale Geografie, 107(5), pp. 628–641. DOI: 10.1111/tesg.12203 Salvati, L. & Carlucci, M. (2016) Patterns of sprawl: The socioeconomic and territorial profile of dispersed urban areas in Italy. Regional Studies, 50(8), pp. 1346–1359. DOI: 10.1080/00343404.2015.1009435 Salvati, L., Sateriano, A. & Grigoriadis, S.  (2016) Crisis and the city: Profil- ing urban growth under economic expansion and stagnation. Letters in Spatial and Resource Science, 9(3), pp. 329–342. DOI: 10.1007/s12076-015-0160-4 Sayas, J. P.  (2004) An exploration of the social and spatial division of labour in the Athenian urban space. The Greek Review of Social Research, 113, pp. 167–206. DOI: 10.12681/grsr.9357 Sayas, J. P.  (2006) Urban sprawl in the periurban coastal zones of Ath- ens. The Greek Review of Social Research, 120(B), pp. 71–104. Schneider, A. & Woodcock, C. E.  (2008) Compact, dispersed, fragment- ed, extensive? A comparison of urban growth in 25 global cities using remotely sensed data, pattern metrics and census information. Urban Studies, 45(3), pp. 659–692. DOI: 10.1177/0042098007087340 Scott, A. J.  (2001) Global city-regions. Trends, theory, policy. Oxford, Oxford University Press. Terzi, F. & Bolen, F.  (2009) Urban sprawl measurement of Is- tanbul. European Planning Studies, 17(10), pp. 1559–1570. DOI: 10.1080/09654310903141797 Turok, I. & Mykhnenko, V.  (2007) The trajectories of European cities, 1960–2005. Cities, 24(3), pp. 165–182. DOI: 10.1016/j.cities.2007.01.007 Vaiou, D.  (1997) Facets of spatial development and plan- ning in Greece. European Planning Studies, 5(4), pp. 431–433. DOI: 10.1080/09654319708720410 Weber, C., Petropoulou, C. & Hirsch, J.  (2005) Urban development in the Athens metropolitan area using remote sensing data with supervised analysis and GIS. International Journal of Remote Sensing, 26(4), pp. 785– 796. DOI: 10.1080/01431160512331316856 Zagorianakos, E.  (2004) Athens 2004 Olympic Games’ transporta- tion plan: A missed opportunity for strategic environmental assess- ment (SEA) integration. Journal of Transport Geography, 12(2), pp. 115– 125. DOI: 10.1016/j.jtrangeo.2003.12.001 Sprawl and mega-events: Economic growth and recent urban expansion in a city losing its competitive edge (Athens, Greece) uiiziv-28-2_02.indd 121 12.12.2017 7:50:17