There are in fact three buildings under the glass roof that share their cold walls and views onto the nave from the documentation center’s «winter garden» to the cafeteria’s «café terraces». This bioclimate space is vivified and dilated by high and low views of the Loire River further off. The architecture fades between this interiorness and the urban landscape to highlight the rationality of the circuits and the clarity of uses. One end of the building contains the domestic functions like the boarding school, the cafeteria and the residences. While at the other end there are the areas around teaching such as the documentation and information center, the gymnasiums on the same ground floor as the classrooms, including a tall climbing wall, a kind of horizon for the inner street, suggesting the metaphor of an impossible escape.