#14 The pool of San Alfonso del Mar, Algarrobo, Chile
Located in Algarrobo, Chile, San Alfonso del Mar boasts the largest crystal-clear pool in the world, recognized by the Guinness World Records. Spanning over 900 meters, the pool is filled with about 250 million liters of purified seawater. Situated along the beachfront in front of the hotel, the pool features incredibly clear, turquoise water, made possible by advanced filtration technology. Additionally, the water temperature is approximately nine degrees warmer than the nearby ocean in the summer. Its vast expanse offers guests the opportunity to enjoy various water activities, such as kayaking, sailing, and diving.