This curved glass staircase, in the atrium of a new company headquarters close to the Arc de Triomphe, links the ground floor to the meeting rooms above. It has a 4.5 m, floor-to-ceiling curved supporting wall on the inner side and a handrail-height parapet on the outside, all in glass, with glass treads and tubular stainless-steel spanning between. At its base and in the top corners, the glass wall is connected to the reinforced concrete floors.