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 connexion with ‘’Blue-white-red’’. In the sales space, a partition in triangulation, 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.