Concept and challenges: The sales office of Tour des Canadiens is an ambitious building with a white and clean architecture. At its heart stands a red cube which reminds us of the connection with “blue-white-red”. In the sales space, a triangulated partition, very dynamic, spreads itself and creates sub-spaces : offices and an immersive room. Following is a typical unit, chic and “haute couture” style, which offers a glimpse of the view from the tower.