World Waterpark (Alberta, Canada)
Located inside Alberta's West Edmonton Mall, this is the world's second-largest indoor water park and has the world's largest indoor wave pool, with 2.7 million gallons of water.
Attractions include a looping water slide and Blue Thunder, a bungee jump tower suspended over the wave pool.
World Waterpark, 1755, 8882 170 St., Edmonton, Canada; +1 780 444 5313
Yas Waterworld (Abu Dhabi, UAE)
Opened in 2013, Yas Waterworld has 43 rides and attractions, including five unique water slides created specially for the park.
These include Dawwama, the world's first hydro-magnetic-powered water slide (the hydro-magnetic technology offers a longer, smoother ride, according to the manufacturer) and the Bandit Bomber, a 1,804-foot-long (550-meter) water coaster.
Visitors can hang ten on the world's largest FlowBarrel surf simulator, or take a spin on Liwa Loop -- the Middle East's only looping water slide.
Yas Waterworld, Yas Island, Abu Dhabi, UAE; +971 2 414 2000