Grande Arche
By the early 1960s, the monument had grown very blackened from coal soot and automobile exhaust, and during 1965–1966 it was cleaned through bleaching. In the prolongation of the Avenue des Champs-Élysées, a new arch, the Grande Arche de la Défense, was built in 1982, completing the line of monuments that forms Paris's "Axe historique". After the "Arc de Triomphe du Carrousel" and the "Arc de Triomphe de l'Étoile", the "Grande Arche" is the third arch built on the same perspective.