What you’re looking at above is Nemo 33, the deepest indoor swimming pool in the world, located in Brussels, Belgium. It has a maximum depth of 34.5-meters (113-feet) and contains 2,500,000 litres (660,000 gallons) of non-chlorinated, highly filtered spring water maintained at 30 °C (86 °F) and holds several simulated underwater caves at the 10-meters (33-feet) depth level. After the second platform, divers can plunge 108 feet down into a manmade abyss. Continue reading for two videos, more pictures and additional information.

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. Nemo 33 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, including holidays.