World Waterpark is a water park located at West Edmonton Mall in Edmonton, Alberta, Canada. Opened to the public in 1986, it is the world's second-largest indoor water park after the Tropical Islands Resort in Germany. It has a maximum capacity of 5000 guests, an average air temperature of 31 °C (88 °F), and contains the world's largest indoor wave pool with a capacity of 12.3 million litres.
The highest slides in the park are Twister and Cyclone, which are both 83 feet (25 m) high.
Tsunami is a simulated surfing attraction on which people use a flowboard or a bodyboard to ride an endless wave in a controlled environment. That was opened on 2 December 2014. To make way for the Tsunami slide, West Edmonton Mall permanently closed the Thunderbolt slide.
According to the Waterpark map, the Blue Bullet is classified as an advanced slide.
World Waterpark is the last waterslide park in Alberta after the closure of Wild Waters Waterslides in 2012, a unknown, unnamed waterpark near Chestermere Lake (unknown closure date), one in Calgary, and the Wild Rapids Waterslide Park in 2016. The waterpark is also the location of the novel The Phoenix Index: Never Rain by author James Cummins.