Y-40

The hotel offers tickets to freedive and scuba dive. Italian freediver Umberto Pelizzari first measured the depth before the pool was open. When it opened on 5 June 2014, it was awarded the "Deepest Swimming Pool for Diving" by the Guinness World Records. It is 137 ft (42 m) deep with thermal water. The pool features underwater caves and a suspended, transparent, underwater tunnel for guests to walk through. It includes platforms at various depths, ranging from 4.2 feet (1.3 m) to 39 ft (12 m), before the walls of the pool narrow into a well-like funnel which plunges straight down to 137 feet (42 m). The hotel offers tickets to freedive and scuba dive. Y-40 is also known as The Deep Joy.