"The Grande Arche" is actually an office building that is the highlight of the La Defense project. The whole project was started by the French President François Mitterrand in the early 1980's. The impressive building was designed by the Danish architect Johann Otto von Spreckelsen after winning the bid, and the building was built between 1982- 1989.
From the rooftop view there is a breathtaking view of Paris. You can clearly see here the connection between the Louvre Museum and the Arche de Triomphe.
The arche contains straight lines. It was designed as a 20th century version of the victory gate designed by Napoleon Bonaparte. But, unlike the Arche de Triomphe, the Grande Arche represents the victory of peace and humanity before the war.
The arche creates a 3-D cube 110 meters in all directions. At the center of the cube is an empty space located on 4 sides of the arc. This space is the base for the office building.