#14 The pool of San Alfonso del Mar, Algarrobo, Chile
San Alfonso del Mar, located in Algarrobo, Chile, boasts an incredible pool, which in itself is a Guiness record as the world’s largest crystal pool. To fill the pool with more than 900 meters, approximately 250 million liters of purified and treated seawater is required. This huge pool is located on the beach in front of the hotel. San Alfonso del Mar uses a special technology, thanks to that the water of the pool is as crystal-clear, turquoise as the sea itself. Moreover, the pool is about nine degrees warmer in summer than the ocean. The pool is so large that guests can try many water sports such as diving, sailing or kayaking.