5 Incredible Natural Swimming Pools in the World

Located about 20 nautical miles from Puerto Vallarta, lies an idyllic beach paradise hidden underneath a hole in the ground. 
Called the "Hidden Beach" or "Playa de Amor" (Beach of Love).
The Marieta Islands in Mexico is said to have formed centuries ago due to volcanic activity and are entirely uninhabited. 
A water tunnel in the Marieta Island lead swimmers to this hidden beach.
It is approximately a forty to fifty feet swim through the cave with about five to six feet of space above water level to the rock. As it is not an underwater tunnel, there is no necessity for a scuba gear or to even hold your breath.

Known as Sacred Blue Cenote.
The pool is about 133 feet deep and 190 feet wide, adorned in tropical vegetation and filled with clear blue water that Mayan royalty used for both relaxation and ritual sacrifices.
It is a large sinkhole on Mexico's Yucatan Peninsula that's sacred to the Mayans.
The peninsula's unique composition of porous limestone has resulted in several of these water-filled sinkholes, but Cenote Ik Kil is one of its most famous.

Natural sea lagoon carved in the rocks, in the region of Astris.
Height reaches upto 8 metres, from where visitors can dive.
The pool is separated from the sea with a rock wall, making the water of the lagoon much warmer, and more pleasant to dive in.

Twice the height of Niagara Falls, Victoria Falls in southeastern Africa is the largest waterfall in the world.
Most Dangerous Pool in the World.
Ultimate Infinity Pool.
It sits perched at the top of Victoria Falls, and usually between September and December when a rock barrier forms an eddy with minimal current, it becomes safe to swim right up to the edge and gaze down at the 300-foot drop.
Adventurous swimmers can splash around in relative safety a few feet from the point where the water cascades over the falls.

Like an oasis in the desert.
Located on the Havasupai Indian Reservation just south of the Grand Canyon National Park, Havasu Falls is only accessible by helicopter or a ten-mile hike attended by pack mules.
Havasu Creek is fed by a spring, so the water remains at a steady level and is 70 degrees year-round.
Havasu Falls is 120 feet high and is a favorite spot for picnics.