Fancy a dip?

There’s no such thing as going for a quick dip in the swimming pool at the San Alfonso del Mar resort in Chile.

The enormous man-made lagoon, set halfway up the country’s Pacific coast, in the city of Algarrobo, is filled with 66 million gallons of crystal clear water. It is officially the world’s biggest pool – stretching for the equivalent of 20 Olympic size pools – and also the deepest at 115ft to the bottom. As stunning new images have been released of the San Alfonso pool, which is said to have cost £1bn to build, we take a look at five more amazing pools around the world.

Infinity pool, Marina Sands Skypark, Singapore

This one is definitely not for the faint hearted as it seems to spill, waterfall-like down to the streets below. Sitting 200 metres above the city, it stretches across the span of the three towers which form the hotel. Swimming to the edge isn’t quite as risky as it looks though. While the water appears to end in a sheer drop, it actually falls into a catchment area before being pumped back into the main pool.

Devil’s Pool, Zimbabwe, Africa

One not to miss, a small lagoon enclosed by rocks on the edge of Victoria Falls, one of the world’s most beautiful waterfalls. A natural rock ledge stops swimmers being swept over the edge but the pool can be dangerous and there have been fatalities here. Swimmers should only go when water levels are low, usually from September to December. At other times the ledge does not offer enough protection and the pool is inaccessible.

Cantilever Pool, Shanghai, China

The Holiday Inn in Shanghai at Pudong Kangqiao features a cantilever pool which looks as if it defies the laws of physics. Located on the 24th floor of the hotel, it is 30 metres long and, suspended over the side of the hotel, has a glass bottom looking onto the streets below. Definitely one for those with a head for heights.

Blood Red Pool, The Library Hotel, Koh Samui

We all take it as read that a swimming pool ought to be blue so this new take on colour looks remarkable. It contrasts with the white sandy beach of Chaweng, which is just a few steps away and is surrounded by the huge trees which the hotel developers worked around when creating the bliss-out luxury resort.

Homestead Crater, Utah

Located in Midway, Utah this is an amazing feat of nature, a 55ft tall limestone rock that has filled with water after being hollowed out over time. The 96 degree water is rich in minerals, the perfect retreat after a chilly day of skiing at one of four nearby resort areas. It was first used by weary silver miners who were lowered down by rope in the late 1800s to soothe their tired muscles in the water. Nowadays, visitors enter through a 100ft tunnel bored into the dome’s porous rock wall above the water line.

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