From Wikipedia: https://en.wikipedia.org/wiki/Guggenheim_Museum_Bilbao
The Guggenheim Museum Bilbao is a museum of modern and contemporary art, designed by Canadian-American architect Frank Gehry, and located in Bilbao, Basque Country, Spain. The museum was inaugurated on October 18, 1997, by former King Juan Carlos I of Spain. Built alongside the Nervion River, which runs through the city of Bilbao to the Cantabrian Sea, it is one of several museums belonging to the Solomon R. Guggenheim Foundation and features permanent and visiting exhibits of works by Spanish and international artists. It is one of the largest museums in Spain.