The site of the former Boucicaut Hospital in Paris’s 15th arrondissement is an unusual enclave within a district that is otherwise quite diverse. The urban development project proposed by the sector’s town planner Paul Chemetov, maintains notion of an internal uniformity, in contrast with the immediate surroundings. Very different styles of architecture exist in the district surrounding the sector, mainly dating from the 19th and 20th centuries. By contrast, the urban project proposes a rigorous organisation of blocks arranged together in a series of steady colours and natural materials, all falling within a sort of historic continuity that preserves the original residential character.