Tour CB21

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.

Tour CB21
Tour CB21
General information
Type	Office
Location	La Défense (Courbevoie)
Coordinates	48°53′20.00″N 2°14′59.30″E
Construction started	1972
Completed	1974
Height
Antenna spire	187 m (614 ft)
Roof	179 m (587 ft)
Technical details
Floor count	44
Floor area	70,500 m2 (759,000 sq ft)
Design and construction
Architect	Harrison & Abramovitz, J. P. Bisseuil

Built from 1972 to 1974, the tower is 179 m (587 ft) tall at roof height. However, it reaches 187 m (614 ft) once including the antenna located on the roof. It is the fourth-tallest skyscraper in La Défense after Tour First, Tour Total and Tour Areva. Its ground shape is in the form of a Greek cross.

In 1972, during construction, a protest campaign opposed the building of Tour Gan, which was deemed too tall and thus too visible from the historical center of Paris and particularly from the Champs-Elysées. Protesters demanded a reduction in height. However, those protests had no effect and the tower was completed at the planned height.

Today, the main tenants are Suez Environnement and AIG France.

All the asbestos from the Tour Gan was removed between 1995 and 2001.

The structure is owned by Fonciere des Regions.[1]