Located on a private island in Fiji, Poseidon Undersea is the world’s first sea floor resort. It resides 40 feet below the surface of the clear blue Fiji lagoon, with underwater suites accessible by elevator. One can feed the fish and even turn on sparkling underwater lights, by pushing certain buttons. Remarkable views of the ocean are possible due to the fact that that 70% of each suite is covered in acrylic walls. Scary dangerous place to stay in, but the mesmerizing beauty surely makes up for it in this awesome hotel!