Suspended black staircases feature in one of these buildings designed by Zaha Hadid (-5[2])which was built (10[1])on the site of (10[1])a military barracks. The Quadracci Pavilion was designed by Santiago Calatrava for one of these buildings in Milwaukee. A skylight shaped (-5[1])like a metal flower (10[1])tops one of these buildings designed by Frank Gehry, which has flowers (0[1])in a 40-foot-tall puppy shape outside it. A helical ramp surrounds an open atrium in one of these buildings (-5[1])that its (10[1])architect called an “inverted ziggurat.” (10[1])François Mitterand commissioned I. M. Pei to design a glass-and-metal structure (10[1])for one of these buildings in Paris. (10[2])For 10 points, what kinds of buildings (10[1])include the Guggenheim and the Louvre? ■END■ (10[2])