Rooftop Pool (Singapore)
If you fancy a dip in this pool, you'll need a head for heights - it's 55 storeys up. But swimming to the edge won't be quite as risky as it looks. While the water in the infinity pool seems to end in a sheer drop, it actually spills into a catchment area where it is pumped back into the main pool. At three times the length of an Olympic pool and 650ft up, it is the largest outdoor pool in the world at that height. It features in the impressive, boat-shaped 'SkyPark' perched atop the three towers that make up the world's most expensive hotel, the £4billion Marina Bay Sands development in Singapore.
Rooftop Tennis Court (Dubai)
Andre Agassi and Roger Federer were invited to have a friendly match on the world's highest tennis court on the helipad of Burj Al Arab, 211 meters above the ground.
Rooftop Roller Coaster (Japan)
Built on the roof-top of an eight-story outlet store in a busy city area, this scary Half Pipe roller coaster was never opened. According to some sources online the problem is with the structure of the building. While the building is capable of handling the weight of the roller coaster, the lateral forces presented an unexpected problem and is why the roller coaster never opened. (At 'Don Quijote' department store in downtown Tokyo).
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Rooftop Cinema (Australia)