World's Deepest Swimming Pool: Nemo33

The Deepest Pool In The World

Nemo 33 is a recreational diving center in Brussels, Belgium that is home to the world's deepest swimming pool. 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). 

http://www.nemo33.com/