World's Largest Outdoor Pool at the San Alfonso del Mar Resort in Chile

To swim the length of the world's largest outdoor swimming pool, at the San Alfonso del Mar resort in Chile, you would need to swim more than three fifths of a mile (20 Olympic-size swimming pools), The pool, which started construction in December of 2006, holds more than 66 million gallons, goes up to 115ft deep, and cost around £1billion to make. You can even go kayaking and sail boats in it!
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