Located at the San Alfonso del Mar resort in Algarrobo, Chile the biggest pool on the planet sits. It is over 1,013 meters (3,324 ft) in length with a total area of 8 hectares (19.77 acres). It holds an impressive 250 million liters (66 million gallons) of water and is the equivalent to about 6,000 8-meter long pools, which I’m told is alot.