Kilimanjaro, Brazil At 49.9m high – 12m higher than the city's Christ the Redeemer statue – this is not only the world's tallest slide, it's also reportedly the world's fastest, with a record speed of 57mph.

The Kilimanjaro water slide, located at the Aldeia das Águas Park Resort in Barra do Piraí, Brazil, is a legendary feat of engineering that reaches a blistering maximum speed of approximately 100 km/h (about 62 mph). Standing at a staggering height of 49.9 meters (164 feet), it held the Guinness World Record for the tallest body slide for many years. To achieve such high speeds, the slide features a nearly vertical 60-degree drop that creates a sensation of pure free-fall. In 2026, it remains a bucket-list item for thrill-seekers, though it is often compared to the Insano slide in Fortaleza, which reaches similar speeds but with a slightly more abrupt descent. The experience on Kilimanjaro is so intense that riders are often "airborne" for a split second at the top of the drop before the water catches them for the final, high-velocity glide into the splash-down pool at the base.