To bring back life on these large empty floor plates which open on the horizon of the city with its notched architecture and its oversized monuments. We started with warm colors and diffuse lighting and then came the mandatory transparency to preserve the view and the light. Finally, this giant lobby 11 meters tall under a reflective ceiling as a library playing the contrasts, the alternation of screens and the actual, 2D / 3D, in order to disturb the senses and to inspire its occupants sitting on sofas … hanging on the walls.