The Fractionator: 250 Feet of Enclosed Tube
The Fractionator at Meryal Waterpark in Lusail, Qatar starts higher than any enclosed water slide in history — 250 ft 4 in (76.3 m) up the park’s Icon Tower. Together with Vertigo, the trapdoor slide beside it, it holds the Guinness World Records title for the tallest water slide on Earth.
Where Vertigo gets its scare from a floor that vanishes, The Fractionator plays a longer game: an enclosed tube that snakes down the full height of the tower, turning a 25-story descent into a sustained, twisting run rather than one violent drop.
Key Stats
| Height | 250 ft 4 in (76.3 m) |
| Opened | 2023 |
| Type | Enclosed tube slide |
| Park | Meryal Waterpark, Lusail, Qatar |
| Record | Guinness World Records: tallest water slide (shared with Vertigo) |
The Shared World Record
Guinness World Records certified the tallest water slide record at 76.309 m (250 ft 4 in) on October 6, 2024, naming developer Qetaifan Projects as the record holder. The measurement covers both slides launching from the top of the Icon Tower — The Fractionator and Vertigo — and Guinness separately recognizes the Icon Tower as the tallest water slide structure ever built.
The pair sit first and second on our list of the tallest water slides in the world, more than 80 feet clear of anything else operating anywhere.
Meryal Waterpark
Opened in 2023 on Qetaifan Island North, just off Lusail’s waterfront, Meryal packs in 45 rides and 52 slides and has become one of Qatar’s signature family destinations, picking up the Qatar Tourism Award in 2025. The Icon Tower — a 250-foot slide tower rising out of the lagoon — is its unmistakable landmark.
Why the Height Matters
For context: the infamous Verrückt in Kansas City, the record holder from 2014 until its 2018 demolition, topped out at 168 ft 7 in. Brazil’s Kilimanjaro, the tallest slide in the Americas, is 163.7 ft. The Fractionator’s starting platform is higher than both of those stacked against an extra eight stories. Slides simply were not built at this scale before Meryal.
FAQ
How tall is The Fractionator?
The Fractionator descends from 250 ft 4 in (76.309 m) — a height certified by Guinness World Records in October 2024 and shared with Vertigo on the same tower.
Is The Fractionator a body slide?
No — it is an enclosed tube slide that winds down the Icon Tower, in contrast to Vertigo, the trapdoor free-fall slide it shares the record with.
Where is Meryal Waterpark?
On Qetaifan Island North in Lusail, Qatar, just north of Doha. The park opened in 2023 with 45 rides and 52 slides.