Ko Phi Phi Lee, Thailand
This is a island or you must say paradise. Nobody live there, it is a preservation island, you just can get there by boat. 

Flight view Ko Phi Phi Lee Island.
Maya Bay is popular for diving, and has become even more popular after the 2000 movie The Beach was filmed there. The main dive sites are at Loh Samah, Maya Bay entrance and Palong Bay.

The view of Loh Samah, Maya Bay.