Wow. This two-chamber hotel 30 feet (10 meters) underwater off the coast of Key Largo, Florida truly feels like you are spending the night in a different world. Guests are surrounded by views of tropical fish and lagoon water. But the vibe of this place is what makes it truly memorable — the lighting and sounds here are different than they are living on land. And since no hotel staff stays overnights below you’ll be free to explore around this underwater space station in privacy. To make the dive down to the lodge guests are required to take a three hour course if they are not already scuba certified. “Mer-chefs” are available to cook dinner. One guess what sort of food is on the menu.