Nemo 33 is a recreational diving centre located in Brussels, Belgium that houses the deepest pool in the world. The pool itself consists of a submerged structure with flat platforms at various depth levels. The pool has two large flat-bottomed areas at depth levels of 5m (16 ft) and 10m (32 ft), and a large
circular pit descending to a depth of 33m (108 ft).The deepest part of the pool used for diving instruction. Unlike other conventional pools, this pool is filled with 2.5 million litres of non-chlorinated spring water maintained at 30°C and comes with simulated caves at the 10m mark. Visitors can also look into the pool at various depths through underwater windows. The complex was designed by Belgian diving expert John Beernaerts as a multi-purpose diving instruction, recreational, and film production facility, and opened in 2004.
