El Museo Guggenheim
Frank Gehry's most celebrated work. The museum is located in Bilbao in the Basque Country (northern Spain).
This is the main entrance to the Guggenheim. At the front entrance you can find a huge masterpiece known as "puppy" from the artist: Jeff Koons.
The museum itself possesses modern artwork from artists such as Warhol and many others - quite an eclectic combination but most definitely worth a visit (both outside and inside).