If there is one building by Le Corbusier that represents a synthesis of his basic concepts it is certainly the Unite d'habitation built in Marseille in 1946-52. This building is now very popular with the people who live in it. Le Corbusier used his architectural resources atmospherically and scenically to give the Unite d'habitation a succinct coherence that also forms the basis for individual lives within its rooms and spaces. Precise observation and description reveal the mechanisms of these effects.