La Defense is a business district in the west of Paris has long been a locality, barely a crossroads. Six kilometers from the center of Paris, in these insignificant confines of Puteaux and Courbevoie, a bronze allegory commemorated the resistance to the Prussian invader of 1870. In 1983, after the contest Tête Défense, launched by President François Mitterrand for extend the historical axis of Paris which goes from the Louvre Museum through the obelisk of the Place de la Concorde and the Arc de Triomphe. L’Arche is a gigantic open cube, 110 on the side and 37 levels in height.