A panoramic view of the Paris business district of La Défense, which includes the cities of Puteaux, Courbevoie and Nanterre, as seen from the Tour Défense 2000. The area holds many of the Paris urban area's tallest high-rises. With its 77.5 acres (314,000 m2), its 72 glass-and-steel slick buildings including 14 high-rises above 150 m (490 ft), its 180,000 daily workers, and 3.5 million m2 (37.7 million sq ft) of office space, La Défense is Europe's largest purpose-built business district.Photo: Dimitri Destugues