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Aerial view of the world's largest swimming pool at a seaside resort in Algarrobo, 95 km west from Santiago, 28 January, 2008. Acknowledged by the Guinness World Records, the lagoon measures 1,013 metres (3,323 ft)) in length, covers an area of eight hectares (20 acres), contains 250,000 cubic meters of water and is navigable in small boats. AFP PHOTO/Martin BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)

Aerial view of the world's largest swimming pool at a seaside resort in Algarrobo, 95 km west from Santiago, 28 January, 2008. Acknowledged by the Guinness World Records, the lagoon measures 1,013 metres (3,323 ft)) in length, covers an area of eight hectares (20 acres), contains 250,000 cubic meters of water and is navigable in small boats.  AFP PHOTO/Martin BERNETTI (Photo credit should read MARTIN BERNETTI/AFP/Getty Images)