Jules’ Undersea Lodge is located 30 ft down on the bottom of the Emerald Lagoon in Key Largo, Florida, USA. It is known to be the only underwater hotel in the USA and while it was originally a marine research module in Puerto Rico, it opened for the tourism business in 1986.
Only one potential problem, you need to be a certified scuba diver to visit, but this isn’t really a problem, as you can attend a course prior to your visit. Anyone interested can head to Jules’ Undersea Lodge at 51 Shoreland Dr., Key Largo, Florida, go to their Facebook page or their website for more details.