San Alfonso del Mar

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The swimming pool at San Alfonso del Mar from ground level

San Alfonso del Mar is a private resort in Algarrobo, Chile, about 100 km (62 mi) west of Santiago.[1] The resort had one of the world's largest swimming pools. At the time of its completion in 2006, it was in the Guinness Book of World Records for the largest pool in the world by area.[2][3]

The pool is 1,013 m (3,323 ft) long,[3] covering 8 ha (20 acres),[3] containing some 250 million litres (66 million US gallons)[4] of seawater, with a maximum depth of 3.5 m (11.5 ft).[5] The water is pumped from the adjacent Pacific Ocean, then filtered and treated. Access to the pool is limited to resort residents only.


Crystal Lagoons developed the lagoon, a company created by Fernando Fischmann in addition to Inmobiliaria El Plomo and the lead architects Marques + Garcés & Asociados Arquitectos Ltda.

The main details of the projects are:[6]

  1. Housing (Area: 100,000 m2 each, Cost 1,700,000 UF) It is the Master Plan for a housing megaproject of 1,200 second home units.
  2. Artificial lagoon (Area: 8.2 Hás, Cost: 180,000 UF) The artificial lagoon covers approx. 8.2 ha, with saltwater and has an average depth of 2.5 meters to 3 meters.
  3. Sub-Acqua Café Aquarium (Area: 770 m2) Located on the edge of the artificial lagoon of San Alfonso del Mar, it is part of the circuit of activities that unfold in its pedestrian perimeter.
  4. Beach Club (Area: 1,312 m2, Cost USD 865,472)One-story building and engine room in the basement that is located in the center of the complex and constitutes its main recreation program. The Club Playa consists of a gym, spa, shop, kiosk-bar, outdoor jacuzzis, and a heated swimming pool covered by a glass pyramid that characterizes the landscape of the bay.
  5. Nightclub (Area: 450 m2, Cost USD 255,000) It is an underground building on the side of a hill built entirely in reinforced concrete with exposed termination. The interior is made up of two interconnected rooms: an ample cylindrical space that houses a sunken dance floor and contained by a perimeter circulation, and a second space, facing the main one, where the bar and DJ are located.
  6. Fragata Building (Area: 23,295 m2, Cost 400,000 UF) A pyramid-shaped building made of reinforced concrete, finished in organic light sand-colored paint, with 14 tiered levels and a total of 141 apartments.
  7. Bitácora Building (Area: 6,468 m2, Cost: 110,000 UF) Building with ten levels “sail” type (stepped in a pyramid shape), made of reinforced concrete painted in light sand color and with a total of 60 apartments. The design is related to the naval images of the ancient ocean liners and sailboats. The configuration of the building allows to obtain maximum view and sunlight to all the departments and, at the same time, shelter, between both wings, its sector of swimming pools and beach.[7]
Panorama of the pool complex seen from north to south.


  1. ^ "Big Dipper". National Geographic. April 2010. p. 30.
  2. ^ "Guinness World Record". World Record Academy. 10 December 2015. Retrieved 15 June 2016.
  3. ^ a b c "Largest swimming pool by area". Guinness World Records. Archived from the original on 8 February 2014. Retrieved 25 May 2012.
  4. ^ Mikkelson, Barbara; Mikkelson, David P. "Pool Queue: Worlds Largest Swimming Pool". Snopes. Retrieved 28 October 2012.
  5. ^ Crystal Lagoons Corporation LLC. "Patent US 8790518 B2". US Patent Office. Retrieved 15 October 2014 – via Google Patents. Minimal and maximal depths were 1.2 and 3.5 meters, being 2.8 meters the average depth.
  6. ^
  7. ^

Dueño de San Alfonso del Mar expande sus lagunas cristalinas[1] 15 of the World's Largest Swimming Pools[2] About San Alfonso del Mar Project[3] [4]

External links[edit]

Coordinates: 33°21′S 71°39.2′W / 33.350°S 71.6533°W / -33.350; -71.6533