Artium Museum
Officially named the Centro-Museo Vasco de Arte Contemporáneo, this former bus station is regarded as the third corner of the Basque modern art triangle, along with the Bilbao Guggenheim and San Sebastián's Chillida–Leku. The museum's permanent collection—including 20th- and 21st-century paintings and sculptures by Jorge Oteiza, Eduardo Chillida, Agustín Ibarrola, and Nestor Basterretxea, among others—makes it one of Spain's finest treasuries of contemporary art.