According to the Guinness Book Of World Records, San Alfonso del Mar, is the largest and deepest swimming pool in the world.
The focal point of a private resort located in Algarrobo, Chile, about 100km (60 miles) west of the capital Santiago, San Alfonso’s
pool is 1,000m long.
The pool covers an area of 7.7 hectares (19 acres) that holds 250 million litres (66 million gallons) of seawater. The pool, developed by Chilean company Crystal Lagoons, uses water pumped, filtered, and treated from the Pacific Ocean to supply to the pool. Thanks to its patented water treatment system, the pool uses 100 times less chemicals and only two per cent of energy compared with traditional pool control methods. In fact, it uses ten times less water than a golf course.
While early estimates put the total cost of construction at about US$ 3.5 million (€2.8 million) for the pool alone, more recent and perhaps more accurate estimates are in the area of $1.5 to 2 billion USD total for construction and almost $4 million USD in annual maintenance.
Crystal Lagoons’ pioneering innovation keeps huge bodies of water in crystalline state and at a very low cost, making it
profitable to develop idyllic beach life anywhere in the world, from deserts to dangerous coastlines, inland territories and even
urban terrains in the heart of our cities.
The company participates in 180 international real estate projects with its lagoons in several countries in the Middle East, Africa, Asia and Latin
America. The projects represent a global investment of US$100 billion through partnerships and strategic alliances with real
In fact, San Alfonso del Mar’s time as a world beater is going to be limited. It will soon be overtaken by a new lagoon pool complex nearing completion in Sharm El Sheikh, Egypt, that will be ten times bigger at 100 hectares – all located in the middle of a desert.
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