Even though It looks like something where Ice King from Adventure Time would live in if he had a house in Spain, Guggenheim Bilbao serves a big purpose - it’s a museum of modern and contemporary art which in itself is a piece of art. Named as one of the most important works of architecture in the last decades by numerous experts, this building has many reasons why it’s unique. This construction was so successful and well acclaimed that it started attracting tourists to the city of Bilbao. Lots of tourists. During the first 12 months since the museum opened, tourists generated $160 million for the local economy. This building basically revived an entire city. This economical phenomenon even received a name - the Bilbao Effect.