World’s Largest Swimming Pool By Kaushik Tuesday, May 22, 2012 Attractions, Travel 6 comments The swimming pool at the San Alfonso del Mar resort in Algarrobo, Chile holds the record of being the largest in the world. At 1,012 meters (3,324 ft) in length and a total area of 8 hectares (19.77 acres), it is larger than 20 Olympic-size pools and six-times bigger than its closes..