Where monkeys run wild and the humans are caged.

This small primate research island is teeming with playing, fighting wild monkeys.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

Dedicated to improving the plight of the rare scaly anteater.

The original goat tower, the one that started it all.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

An open-air sewer system that was covered piece-by-piece over 300 years.

Experiencing Guatemala's sensory-exploding church is a blunt reminder of European influence.

Caves that can't seem to quit producing the remains of prehistoric humans.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

Nature is leading a successful mutiny on this century-old freighter.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

A Romanesque tower appears when water levels drop.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

UNESCO-protected ancient burial ground.

An eerie, derelict amusement park in Berlin.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.