As if it isn't enough to have the beach at your doorstep, the folks at Chile's San Alfonso del Mar have taken the swimming/beach lounging experience to the extreme by constructing the largest swimming pool in the world. The man-made lagoon stretches more than a half-mile along the Chilean coast with a total swimmable area of nearly 20 acres. It's also the first fully navigable man-made lagoon on earth, so swimming isn't the only activity on the menu. Photo courtesy of San Alfonso del Mar
In a pool this size, it's possible to scuba dive, sail or kayak through the clear blue waters – waters that tend to be several degrees warmer than the sea just a few steps away. On chilly days, you can still swim in at the temperature-controlled beach within the lagoon's glass pyramid. Indoor and outdoor Jacuzzis, man-made beaches, realistic water currents, water slides and solar heating round out the offerings at this impressive pool Photo courtesy of San Alfonso del Mar
San Alfonso del Mar also houses the country's biggest aquarium, with more than 42 native aquatic species on display. The same state-of-the-art filtration system that brings crystal-clear seawater into the lagoon also pumps into the aquarium. Photo courtesy of San Alfonso del Mar
San Alfonso del Mar is less of a hotel and more of a comprehensive entertainment and real estate complex with more than 1,300 residential units for rent or sale, geared toward vacation home owners and time shares.