Palawan, often voted the world's most beautiful island, conceals one of nature's greatest secrets: the Puerto Princesa Subterranean River. This 8.2-kilometer (5.1-mile) navigable waterway winds through a …

The Chocolate Hills are a vast field of at least 1,260—and potentially up to 1,776—perfectly symmetrical, cone-shaped hills spread across 50 square kilometers of Bohol province. During the dry season …