It is believed that the historic tower is sinking at a rate of an inch a year, though no one is completely sure why.

Nearly 100 concrete graves lie hidden just beyond the pristine waters along the coast.

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

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

Calcium-rich water has turned the water and rocks of these Philippines falls slightly green.

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

Bohol's mysterious brown hills.

A unique beach made of a myriad of multi-sized pebbles.

A once great mansion stands in stately ruin.

This belfry is all that remains of the town that was buried by a violent volcano eruption.

The abandoned medieval theme park was meant to be the "Disneyland of the Philippines."

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.

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

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

A man-made island designed to look like a massive battleship.

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

Smoked mummies housed in mountainside caves.

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

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

The largest mosque in Cambodia was built to unite the country's Muslim community but soon sparked division and controversy instead.

More than 100 Hindu temples are slowly being swallowed by the forest.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.