24. Guggenheim Museum, Bilbao, Spain (1997); architect: Frank Gehry (born 1929). Frank Gehry was born in Canada, first moved to California as a student, and then settled and started an architectural practice there, initially making fairly conventional designs. His experimental work, starting with his own house in Santa Monica, has taken him in the direction of designing buildings that have more in common with the traditions of sculptural form than with architecture. The design for the Guggenheim Museum in Bilbao is spectacular and eye-catching, and has helped to draw international attention to a provincial Spanish city, establishing it on the cultural map of the world. The building is constructed with a steel skeleton, clad in titanium tiles, and it seems almost beside the point that it contains gallery spaces for the exhibition of art works. It is the architectural equivalent of a firework.