La Grande Arche- the "new" Arc de Triomphe, Paris; Oct. 2008. The Grande Arche de la Fraternité is a monument in the business district of La Défense to the west of Paris. It is usually known as the Arche de la Défense or simply as La Grande Arche.
The Arche is almost a perfect cube (width: 108m, height: 110m, depth: 112m); it has been suggested that the structure looks like a four-dimensional hypercube (a tesseract) projected onto the three-dimensional world. It has a prestressed concrete frame covered with glass and Carrara marble from Italy and was built by the French civil engineering company Bouygues.