After the collapse of 1940 and Occupation (1940-1944), France Urinal Blocks experienced a remarkable renewal after Liberation in 1944.Through reconstruction and intensive efforts to bring the country out of the housing crisis, the State set up a powerful production system, which based the expansion of the building sector on the concentration of investment in large companies.It was the era Body Cream of the grands ensembles, of heavy prefabrication and giant construction sites.Initially well received by their inhabitants, these large housing complexes rapidly deteriorated and became ghettos.Despite the social difficulties that beset these neighborhoods, how can this important heritage of modernity be preserved today?.