Utah's Underground Pool
Located just below the grounds of the Homestead Resort, this pool is a 55 foot-high limestone rock dome filled with natural spring waters that are rich in minerals. It is believed to be over 10,000 years old, formed from melting snow that once came from the Wasatch Mountains, after picking up minerals along the way. The magical wonder is, the mineral water is naturally kept warm at between 90 to 96 degrees Fahrenheit.
The Homestead Resort has also thoughtfully built a tunnel that goes through the rock wall from the ground level so that visitors can easily access the pool.
Because of the warm water, this pool has attracted numerous scuba diving enthusiasts. In fact it is the only warm water diving destination in the United States. Swimming and snorkelling is also allowed in the waters.
One of the most famous Gellert Baths is housed in Hotel Gellert, in Budapest, where it is commonly believed that the mineral spring water have healing powers. Gellert Baths was built in 1918 and once damaged during the World War II. Despite a restoration in 2008, the traditional design used in the Roman times still remains.
There are a total of 13 bath units, both indoor and outdoor, which are all heated up as well. Temperature of the water ranges from 26 degree Celcius to 38 degree Celcius.
Titled the 'World's Deepest Swimming Pool", Nemo 33 is constructed by a diving enthusiast named John Beernaerts, who was keen on searching for an ideal venue for fellow scuba-diving lovers.
It may look just like any other swimming pool from the ground level but what lies beneath is 2,5000,000 litres of non-chlorinated but highly filtered spring water of about 30 degree Celsius. The pool has 2 flat platforms; one at the 5m depth level and the other at the 10m level, followed by a circular shaped pit that is 33m below water surface.
The clubhouse now has set up a diving school that offers various diving courses and a dive shop that sells professional diving equipment. In fact, it is getting popular for film productions as well!
Hope it gets you interested in some of these coolest pools in the world. After all, the expectations of swimming pools are getting higher as strong competition kicks in. Personally, infinity pools are my favourite. Even if guests do not swim in them, the presence of an infinity pool alone adds on to the aesthetics of the place, don't you think so? ;)