I love the lazy river at Typhoon Lagoon. When you get too tired being thrown around in the wave pool, you can just float along on a tube. It's also nice because you can just hop off your tube and get pulled along in the water.
West Edmonton Mall. Built by the Ghermezian brothers between the years of 1981 and 1998, contains the world's largest indoor amusement park (including the world’s largest indoor triple loop rollercoaster), the world’s largest indoor wave pool, and an NHL-size ice arena. At 5.3 million square feet, the West Edmonton Mall stretches for 48 city blocks. Theme rooms in the hotel are great.