Musée d’Art Moderne et d’Art Contemporain Nice

European and American avant-garde works from the 1950s to the present are the focus of this sprawling multilevel museum. Highlights include many works by Christo and Nice’s neorealists: Niki de Saint Phalle, César, Arman and Yves Klein. The building’s rooftop also works as an exhibition space (with knockout panoramas of Nice to boot).