In 1961, three years after they met in Paris, Christo and Jeanne-Claude began creating works of art in public spaces. One of their projects was to wrap a public building. When he arrived in Paris, Christo rented a small room near the Arc de Triomphe and had been attracted by the monument ever since. In 1962, he made a photomontage of the Arc de Triomphe wrapped, seen from the Avenue Foch and, in 1988, a collage. 60 years later, the project will finally be concretized. You can read more here