Paris based Ateliers O-S Architectes have restructured an inefficient asbestos-ridden catering building, which is part of the Frédéric Joliot-Curie high school in the town of Dammarie-les-Lys. The updated 1960s building opens up a view of the forest from a 1,200 capacity dining room, and a large ‘roof’ volume brings in light through lateral windows while forming a generous canopy under which pupils can gather. Photo Cyrille Weiner. Ateliers O-S Architectes