Centre of New Industries and Technologies

The Centre of New Industries and Technologies, located in Puteaux, France, is the first building ever to be developed in La Défense, west of Paris, France. It functions as a convention centre, though it also houses shops and offices such as Fnac, ESSEC Business School campus for executive education, as well as a Hilton hotel.Its characteristic shape is due to the triangular plot it occupies, replacing the old Zodiac factories, on the territory of Puteaux. Opened in 1958, the CNIT underwent two restructurings, in 1988 and 2009. It is managed by the company Viparis.

Source: Wikipedia