'Death defying' infinity pool planned to top London skyscraper

(Compass Pools)

LONDON — An infinity rooftop pool that’s planned for London is not for the faint of heart.

Designers say the 55-story building, named Infinity London, would be the only building in the world to incorporate a 360-degree infinity pool.

The 600,000-liter pool will be made of cast acrylic and have transparent sides and floors so people inside the building can see swimmers above them.

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So how do you enter such a pristine pool? By using a spiral staircase that rotates and rise up through the water.

"Swimmers will access the pool through a rotating spiral staircase based on the door of a submarine, rising from the pool floor when someone wants to get in or out," Compass Pools said in a news release.

Construction could begin as early as 2020.