Tourists exploring a cave at the Puerto Princesa Subterrarean River National Park located in Puerto Princesa, on the western Philippine island of Palawan, on February 2011. Tourist numbers to Puerto ... more 

Tourists exploring a cave at the Puerto Princesa Subterrarean River National Park located in Puerto Princesa, on the western Philippine island of Palawan, on February 2011. Tourist numbers to Puerto Princesa jumped from 12,000 in 1992 to 425,000 in 2010, and many more are expected as the area gains global fame -- National Geographic named Palawan as one of its top-20 destinations this year less