Sandcastle Waterpark is a water park located in the Pittsburgh suburb of West Homestead. The park opened in 1989, and is located on a 67-acre (270,000 m²) piece of land along the banks of the Monongahela River. It is currently owned by Herschend Family Entertainment. The park contains sixteen water slides, several swimming pools, and a handful of other attractions.

The site that Sandcastle occupies was formerly a railroad yard for U.S. Steel. In 1988, Kennywood Entertainment Company bought the land and began construction on the park. Sandcastle officially opened to the public in July 1989.^[1] In 2007, the park was sold to Parques Reunidos.^[2]

In early 2025, the park was sold to Herschend Family Entertainment.^[3]

The park has a total of 11 water slides. This includes five speed slides: Blue Tubaluba, Thunder Run, Tubers Towers, Cliffhangers, and Dragon's Den. It also includes three body slides: Lightning Express, Bombs Away, and Boardwalk Blasters. Other attractions at Sandcastle include a lazy river, the Mon-Tsunami wave pool, and several designated areas of water slides and water attractions designed specifically for children called Wet Willie's Waterworks, Mushroom Pool, and Tad Pool. A children's sandbox also exists on the premises.

The only water slide to be removed was a body slide known as Bermuda Triangle. It was replaced by Blue Tubaluba in 2002, which utilizes the same tower queue structure that Bermuda Triangle did.

Sandcastle previously offered a miniature golf course, a go-kart track and volleyball courts. These were replaced by Mon Tsunami in 1999, and Dragon's Den in 2010, respectively. The sand pit left over from the volleyball courts was repurposed into a sandbox for children.

• Official website