Schlitterbahn Waterpark Kansas City was a water park that opened on July 15, 2009 in Kansas City, Kansas. It was announced in September 2005 by Schlitterbahn Waterparks. The 370-acre (1.5 km2), $750 million development included a nearly 40-acre (160,000 m2) waterpark, which is Schlitterbahn's fourth waterpark and its first outside Texas. Groundbreaking took place September 18, 2007 on the land formerly occupied by the Wyandotte County Fairgrounds and the Unified Government courthouse annex, across Interstate 435 from the Kansas Speedway and Village West.