1. Kilimanjaro – Brazil
This monster slide in Rio Water Planet lives up to its mountain-sized name. At 164 feet high, Kilimanjaro is one of the tallest water slides on Earth. Once you step to the edge, there’s no turning back — it feels like you’re jumping off a cliff.
In just a few seconds, you hit nearly 60 mph, with the wind roaring in your face and your stomach somewhere in the sky. It’s not for the faint-hearted — but it’s definitely one you’ll never forget.