The 45.7-metre pool in Mszczonów near Warsaw features artificial underwater caves and a sunken boat for divers to explore, the onet.pl news website has reported.
The facility, called Deepspot, was officially launched this past weekend and is the world's deepest and most modern such structure, according to CEO Michał Braszczyński.
The complex holds some 8,000 cubic meters of water, 27 times the volume in a regular 25-meter swimming pool, according to onet.pl.
The facility cost around PLN 40 million (EUR 8.9 million, USD 10.6 million) to build in an all-Polish project, onet.pl reported.
(gs/pk)
Source: onet.pl, deepspot.com