There are resorts that rest high above sea level. And there are even resorts that can be found below sea level. Here’s one that brings sea level to sea level. The San Alfonso Del Mar in Chile boasts the world’s largest crystalline water pool, also know as the resort’s Salt Water Lagoon. It measures over one kilometer in length and holds 250 million liters of water. The lagoon has the transparency and intense color of tropical seas and keeps collected ocean water in perfect condition. You have to see it to believe it.