It's a mega yacht. With a built-in lagoon. Called the Tropical Island Yacht, this giant 100 million dollar boat from Yacht Island Designs features a volcano waterfall, which flows as a stream into a tide pool, then into a lagoon pool.
Image: Courtesy of San Alfonso del Mar. “The World’s Largest Swimming Pool, is located at the San Alfonso del Mar Resort. We set out to find the most beautiful pools in the world! Check out 10 of our top favorites below.