With over 30,000 square feet of swimming pools and water slides, WaTiki® Indoor Waterpark Resort is the largest indoor water park in the Dakotas. Open year round, WaTiki® is a totally tubular place for birthday parties, family reunions, or a splashin’ good time.  Located in Rapid City, South Dakota, the WaTiki® Waterpark resort complex is more than just a water park. We are home to five hotels, several restaurants, and a huge arcade. Your next family adventure starts at our indoor water park Rapid City!