Suspended black staircases feature in one of these buildings designed by Zaha Hadid which was (-5[1])built on the site of a military (10[1])barracks. The Quadracci Pavilion was designed by Santiago Calatrava for one of these buildings in Milwaukee. (-5[1])A skylight shaped like (-5[1])a metal flower tops one of these buildings designed by Frank Gehry, which has flowers in a 40-foot-tall (-5[1])puppy shape outside it. A (10[1])helical ramp surrounds an open atrium in one of these buildings that (10[1])its architect called an (10[1])“inverted ziggurat.” (-5[1])François Mitterand commissioned I. M. Pei to design a glass-and-metal structure for one of these buildings in Paris. For 10 points, (10[1])what kinds of buildings include the Guggenheim and the Louvre? (10[1])■END■ (10[3])