See Hashslush
In Abano Terme, Italy, the construction of the deepest swimming pool in the world had begun in a hotel named Terme Millepini. Project architect and manager of the hotel, Emanuele Boaretto, started excavation for the Y-40 recently, which is a concept swimming pool for now.
Devoted to driving professionals and amateurs, the pool will be the deepest on the planet, achieving its depth world record with a level of -40 meters below surface.