Hotel Terme Millepini in Italy Features a 131-Foot-Deep Pool

A student swims during an apnea course by Italian free diver, Umberto Pelizzari, at the "Y-40 The Deep Joy" swimming pool on December 8, 2014 in Montegrotto Terme, northeastern Italy. The swimming pool is built over thermal sources bringing after cooling down a water at 32-34 degrees Celsius. Y-40, with its depth of 42mt, is officially included in the Guinness World Record as the deepest pool in the world for free and scuba diving. AFP PHOTO / OLIVIER MORIN (Photo credit should read OLIVIER MORIN/AFP/Getty Images)

A student swims during an apnea course at the “Y-40 The Deep Joy” swimming pool in Montegrotto Terme, Italy. Y-40 holds the Guinness World Record as the deepest pool in the world for free- and scuba diving. (OLIVIER MORIN/AFP/Getty Images)

If you happen to be in northern Italy and have itch to go for a swim, look no further than the Hotel Terme Millepini, home to the world’s deepest pool. Designed by architect Emanuele Boaretto, the “Y-40,” dubbed for its depth of 40 meters (131 feet), was built as an attraction for leisure swimming and free-diving. Guests frequently scuba dive inside as well.

Filled with thermal spa water, the temperature is maintained around 88 degrees to allow divers to enjoy the bottom without a wetsuit. “Y-40” includes tunnels, caves, and platforms at various heights, in addition to the funnel that reaches the pool’s deepest point. See the pool for yourself below. To book a stay at the Hotel Terme Milllepini, click here.

Students swim during an apnea course by Italian free diver, Umberto Pelizzari, at the "Y-40 The Deep Joy" swimming pool on December 8, 2014 in Montegrotto Terme, northeastern Italy. The swimming pool is built over thermal sources bringing after cooling down a water at 32-34 degrees Celsius. Y-40, with its depth of 42mt, is officially included in the Guinness World Record as the deepest pool in the world for free and scuba diving. (Olivier Morin/AFP/Getty Images)

Students swim during an apnea course by Italian free-diver, Umberto Pelizzari, at the “Y-40 The Deep Joy” swimming pool in Montegrotto Terme, Italy. (Olivier Morin/AFP/Getty Images)

AFP/Getty Images

Italian former legend of free diving, Umberto Pelizzari swims up during an apnea course at the "Y-40 The Deep Joy" swimming pool on December 8, 2014 in Montegrotto Terme, northeastern Italy. The swimming pool is built over thermal sources bringing after cooling down a water at 32-34 degrees Celsius. Y-40, with its depth of 42mt, is officially included in the Guinness World Record as the deepest pool in the world for free and scuba diving. (Olivier Morin/AFP/Getty Images)

Umberto Pelizzari swims up during an apnea course at the “Y-40 The Deep Joy” swimming pool in Montegrotto Terme, Italy. (Olivier Morin/AFP/Getty Images)

AFP/Getty Images

Italian former legend of free diving, Umberto Pelizzari (bottom) gives an apnea course at the "Y-40 The Deep Joy" swimming pool on December 8, 2014 in Montegrotto Terme, northeastern Italy. The swimming pool is built over thermal sources bringing after cooling down a water at 32-34 degrees Celsius. Y-40, with its depth of 42mt, is officially included in the Guinness World Record as the deepest pool in the world for free and scuba diving. (Olivier Morin/AFP/Getty Images)

Umberto Pelizzari (bottom) gives an apnea course at the “Y-40 The Deep Joy” swimming pool in Montegrotto Terme, Italy. (Olivier Morin/AFP/Getty Images)

AFP/Getty Images