San Alfonso del Mar
San Alfonso del Mar is a private resort in Algarrobo, Chile, about 100 km (62 mi) west of Santiago. The resort has the world's second largest swimming pool. The new record holder is the 30 acres CityStars pool in Sharm-el-Sheikh, Egypt, built by same company that built San Alfonso del Mar.
The pool is 1,013 m (3,323 ft) long, covering 8 ha (20 acres), containing some 250 million litres (66 million US gallons) of seawater, with a maximum depth of 11.5 ft (3.5052 m). The water is pumped from the Pacific Ocean, filtered, and treated.
The pool was developed by Fernando Fischmann; his Chilean company Crystal Lagoons built the pool, which opened in December 2006. While early estimates put the total cost of construction at about US$3.5 million for the filtration system alone.
Coordinates: 33°21′S 71°39.2′W / 33.350°S 71.6533°W
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