Oscar Niemeyer designed one to look like a UFO and placed it over a cliff.
Corbusier designed one of these buildings for Ueno Park, Tokyo, his only building in Japan. Copper cladding intended to oxidize and turn green covers a building of this type in San Francisco designed by Herzog & de Meuron, who also converted a power station into one of these buildings. Oscar Niemeyer designed one to look like a UFO and placed it over a cliff. A white, ship-like building of this type in Milwaukee was designed by Santiago Calatrava. Louis Kahn built a pair of these at Yale University and designed one in Fort Worth named for the Kimbell family. Frank Lloyd Wright designed one of these buildings in the shape of a spiraling white shell which was criticized for its curved internal walls. For 10 points, name these buildings exemplified by the Guggenheims.
Corbusier designed one of these buildings for Ueno Park, Tokyo, his only building in Japan.
art museums [accept equivalents such as art galleries; accept Western art museums, contemporary art museums, prompt on "museums"]