AEWORLDMAP.COM (3,300+ posts)

Building: Arche de la Défense
Location: La Défense, France
Completion: 1989
Architects: Johann Otto von Spreckelsen & Paul Andreu
Engineer: Erik Reitzel

AE Interests: Created to be a monument to humanity, the structure is almost a perfect cube, resembling a tesseract in 3D. The Arche is composed of a prestressed concrete frame with a façade of glass and Carrara marble. The sides house government offices and the roof has an exhibition center within.