Spreckelsen resigned in July 1986 and ratified the transfer of all his architectural responsibilities to his associate, French architect Paul Andreu.

The Grande Arche is in the approximate shape of a cube with a width, height, and depth of 110 m (360 ft); it has been suggested that the structure looks like a hypercube (a tesseract) projected onto the three-dimensional world.

The roof section was closed in 2010 following an accident without injury[3] and the marble tiles which had begun to peel off were replaced with granite ones.

[4] The void contains skeletal shafts for panoramic lifts and a PTFE-and-fibreglass tensile-membrane sunshade known as the "Cloud" (Le nuage).

[citation needed] Organizations headquartered in the Grande Arche include the Bureau d'Enquêtes sur les Événements de Mer (BEAmer), the French marine accident investigation agency; and the French Land Transport Accident Investigation Bureau, in the southern portion.