Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A bizarre house filled with an astounding array of collections.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

An extravagant monument to an extravagantly unpopular Emperor.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

This hilltop warren of monastic dwellings is the result of centuries worth of Mongol attacks.

This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.

An extraordinary "City of Caves" carved from solid stone.

Rock-cut cave complex filled with ancient Buddhist artwork.

This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

This impressive clifftop temple was once at the center of an international custody dispute.

Dedicated to improving the plight of the rare scaly anteater.

Built by King Norodom to honor his late father.

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

Abandoned soda factory on a Cambodian roadside in a state of beautiful decay.

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

An abandoned Cambodian resort that mirrored the downfall of the country as it was happening.