The Largest Swimming Pool In The World
San Alfonso Del Mar
![San Alfonso Del Mar Aerial View](http://cdn.allrefer.com/reference/facts/uploads/2015/05/san-alfonso2.jpg)
San Alfonso Del Mar Aerial View (Photo Credit: QuĆ³rum Comunicaciones / CC BY-SA 3.0)
San Alfonso del Mar is a private resort in Algarrobo, Chile. The resort is recognised as having the world’s largest swimming pool. The pool is 1,013 m long, covering 20 acres, containing some 250 million litres of seawater with a maximum depth of 11.5 ft.
![San Alfonso Del Mar Swimming Pool](http://cdn.allrefer.com/reference/facts/uploads/2015/05/san-alfonso-del-mar-swimming-pool-2-640x481.jpg)
San Alfonso Del Mar Swimming Pool (Photo Credit: Kyle Pearce / CC BY-SA 2.0)
The water is pumped from the Pacific Ocean, filtered and treated. The pool was developed by Fernando Fischmann and his Chilean company Crystal Lagoons built the pool.
![San Alfonso Del Mar Swimming Pool](http://cdn.allrefer.com/reference/facts/uploads/2015/05/san-alfonso-del-mar-swimming-pool-5-640x480.jpg)
San Alfonso Del Mar Swimming Pool (Photo Credit: Cristian Borquez / CC BY 2.0)
This swimming pool was opened in December 2006. The total cost of construction at about US$3.5 million for the filtration system alone and it takes almost US$4 million in annual maintenance.
![San Alfonso Del Mar Swimming Pool](http://cdn.allrefer.com/reference/facts/uploads/2015/05/san-alfonso-del-mar-swimming-pool-4-640x480.jpg)
San Alfonso Del Mar Swimming Pool (Photo Credit: Cristian Borquez / CC BY 2.0)