The load-bearing outer walls of reinforced concrete have been clad in black granite and tinted glass with barely visible black sections. The fixed windows get taller as they reach the top; it is an "anti-taper perspective" intended to reduce the impression of foreshortening for the viewer below.
The 44th floor, perched at 150 meters above the ground, held Gianni Agnelli's luxurious flat when, as President and Chairman of FIAT, his company owned the building (until 1995).
The architects were inspired by the the famous black monolith of Stanley Kubrick's "2001: a Space Odyssey".
Tour Areva is a smooth, black monolith; its facade looks like congealed glass.
Completed in 1974, Tour Areva features a central core housing the express lifts and its open-plan floors - unobstructed interior space - that were very popular at the time of construction.
Areva is a symbol of La Defense's "second generation" towers: three to four times bigger than those of the "first generation".