5. Bilbao - Spain

Bilbao is an industrial port city in northern Spain. Surrounded by spectacular green mountains, it is the de facto capital of Basque Country. It’s famed for the Frank Gehry–designed Guggenheim Museum, which sparked revitalisation when it opened in 1997. The museum houses prominent modern and contemporary works, but it’s the curvy, titanium-clad building that receives the most attention. Regularly featuring larger than life, controversial art pieces, the town has become a mecca for lovers of contemporary art the world over. Bilbao is also home to football club Athletic Club de Bilbao, one of the most successful clubs in Spanish football history.