After the amazing success of the Water Cube in Beijing for the 2008 Summer Olympics, the aquatic center has been transformed into an incredible (and massive) indoor water park. Rather than just letting the record-smashing facility sit there unused, the owners have transformed the space into the fantastical Happy Magic Water Park, complete with slides, a lazy river, a wave pool, floating jellyfish and more. Now Beijing’s second most visited tourist spot (after the Great Wall) is a hot spot for family activity and the largest water park in Asia.