It's just about offering a new dress to an existing old-fashioned body. Or... how do we have to think a new architecture on buildings made only 40 years ago? Our position: by acting with precision in order to value the firsts potentialities. By respecting the structure and the initial design, understanding it, in a sensitive way, to give a second life to these walls, adapted to new uses.Few signs to design the new look: 1 steel skin, declined in 2 colours:gold to reveal the initial form, black for 3 new interventions: the black steel skirt rise up gently to invite to the new entrance // some cuts on the skin roof allow some volumes to exit bringing natural and constant light into the principal room // a third incision into the gold tissue liberate a new volume dedicated to host the training room, searching almost verticality to establish a dialogue between inside and outside opening the volume directly toward the forest.