Anchorage, United States of America
H2Oasis Indoor Waterpark is a 56,000 square foot (5,200 m2) indoor water park located in Anchorage, Alaska, United States, just east of the Seward Highway at 1520 O'Malley Road. It opened in 2003 and was, at the time, the fifth largest indoor waterpark in the United States.
Listen to the audio guide for H2Oasis Free on WIP — starts by itself when you arrive, even with the screen off