This nursery school in Alsace was built within listed historical walls that once enclosed the gardens of a 5th-century monastery. A low-rise building with a roof articulated into a number of planes. In this way, we were able to keep the eaves lines below the crest of the wall, as required by the authorities, while achieving a greater room height elsewhere. The internal soffit echoes the form of the roof. Not only are the sloping surfaces of advantage acoustically; their complex geometry helps the children to identify with affords access to the entire bulding, lends the nursery a transparent quality. Together with the recreation area three steps lower, the hall provides an indoor play space when the weather is bad. It can also be used for a wide range of events and activities with local residents. All the group rooms are directly linked with the out door realm and receive natural light from two sides-thanks partly to two courtyard areas, one of which is occupied by a pool of water.