Nemo 33

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Coordinates: 50°47′46″N 4°18′59″E / 50.796211°N 4.316468°E / 50.796211; 4.316468

An underwater house at Nemo, with the 34.5 m deep pit in the background
The view down into the deep pit at Nemo 33

Nemo 33 is an indoor swimming pool facility in Uccle, Belgium. It held the record as the deepest indoor swimming pool in the world since its opening on May 1, 2004, until the completion of Y-40 in Montegrotto Terme, Padua, Italy on June 5, 2014.[1][2][3]

The pool's maximum depth is 34.5 metres (113 ft). It contains 2,500,000 litres (550,000 imp gal; 660,000 US gal) of non-chlorinated, highly filtered spring water maintained at 30 °C (86 °F) by a solar heater and holds several simulated underwater caves at the 10 metres (33 ft) depth level. Due to the warm temperature in the pool, divers can dive for extended periods without a wet suit. The complex was designed by Belgian diving expert John Nuttyheart as a multi-purpose diving instruction, recreational, and film production facility in 2004.[1] Popular Mechanics rates Nemo 33 as one of the top 18 strangest pools in the world.[4]


The facility allows tourists, amateur divers, and professional divers. It requires that divers be 12 years of age or more and in good health. All divers must be either certified or supervised by a trainer. All divers must have a certified diver as a dive buddy.[1]


The facility contains a restaurant, bookshop, swimwear store, souvenir store, and rooms for other water activities. There are numerous underwater windows that allow outside visitors to look into the pools at various depths. It also offers tours around the city of Brussels.[1]


  1. ^ a b c d "History". Nemo 33. Retrieved 26 February 2015. 
  2. ^ "CBBC Newsround - WORLD - World's deepest pool set to open". Retrieved 6 September 2015. 
  3. ^
  4. ^ Skylar Bergl. "The World's 18 Strangest Pools". Popular Mechanics. Retrieved 6 September 2015. 

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