Tour CB21 – Wikipedia

Tour CB21, formerly Tour Gan, is an office skyscraper located in La Défense, the high-rise business district situated west of Paris, France. It was designed by celebrated American architect Max Abramovitz. Built from 1972 to 1974, the tower is 179 m (587 ft) tall at roof height.

: https://en.wikipedia.org/wiki/Tour_Gan