One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A church of bones, decorated with 40,000 human skeletons.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

France's most famous cemetery, with some of its most curious tombs.

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.

Hot springs monkey spa in the middle of Hell's Valley.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

The sign at the garden gate reads: "These Plants Can Kill."

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

These fantastically named natural pools look like something out of a Scottish myth.

The fairy tale castle of the "fairy-tale king."