The Guggenheim Museum with its shimmering titanium shell, moored like a ship on the banks of the Nervión River acts as a nod to the city's ship-building past. Outside the museum sits Jeff Koons' iconic and kitsch floral sculpture of a giant puppy.

Some have argued that the building completely overshadows the quality of the art inside, but with a building this special that's no great shame, and often the exhibitions of contemporary art on display are of a very high quality. Original Travel can pre-book tickets or arrange private guided tours.