This tiny island protects a number of rare bird species by only allowing visitors to set foot on the beach.

The once-grand remains of this resort are slowly turning into the strange ruins of the future.

Five miles of underground river link lake to ocean.

Smoked mummies housed in mountainside caves.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

Bohol's mysterious brown hills.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

A cemetery and the town it served sinks beneath the sea during the volcanic birth of Mt. Vulcan.

A once great mansion stands in stately ruin.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

An eatery in a shallow river where diners can enjoy their meal mere feet from the base of an artificial waterfall.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

A magically clear, blue river that seems to spring from nowhere.

Space-age minarets towering over Islamabad.

One of the last surviving ancient Buddhist sites in the region, it escaped the brunt of several Hun invasions thanks to its remote location.

A 17th-century mosque that was used for war more than worship.

The third largest ship breaking yard in the world has created an eerie shipping graveyard in southern Pakistan.

A mere stone's throw from Islamabad exists a spectacular display of three millennia of humanity's progress.

This grand Pakistani mausoleum can only be accessed via an almost 1,000 foot long alleyway.

Lunar landscape, a mud volcano and bizarre rock formations.

These stairs were built to accommodate royals mounted on elephants.

Massive fortress bastions in the desert of Cholistan.

One of the largest necropolises in the world is home to a stunning array of historic Middle Eastern tombs.

The world's second largest salt mine, said to have been discovered by Alexander the Great's horse.