Nemo 33 - The worlds deepest indoor Pool

Nemo 33 is the deepest indoor swimming pool in the world. The pool is located in Brussels, Belgium. Its maximum depth is 34.5 metres (113 ft). It contains 2.5 million litres of non-chlorinated, highly filtered spring water maintained at 30 °C (86 °F) and holds several simulated underwater caves at the 10 metres (33 ft) depth level. There are numerous underwater windows that allow outside visitors to look into the pools at various depths. The complex was designed by Belgian diving expert John Beernaerts as a multi-purpose diving instruction, recreational, and film production facility in 2004.

The pool is open to tourists and professional and amateur divers. The basic regulations require the divers to be aged 12 years or over, healthy, strong, and certified as a diver or supervised by the trainers. For the safety of people who want to dive, they must also have a certified diver as a dive buddy. A fee is required of the customers who use the pool. In addition, Nemo 33 is not open only for diving, but also offers other services, such as; a restaurant, bookshop, swimwear shop, souvenirs, rooms for other water activities, and also a tour around the city. For those who would like to use the services in Nemo 33 they can book throughout the year, even during holidays. (*Wikipedia)

http://www.nemo33.com/en/