Europe's second largest ossuary wasn't discovered until 2001.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

This small chapel is built of human bones and decorated with a golden skeleton.

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

This abandoned amusement park was built on a site with a dark history.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

One of the greatest maze designer’s greatest mazes.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

The cobbled together compound of a deceased artist which now serves as a filming location.

A collection of objects supposedly singed by the hands of souls in purgatory.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Enchanting cave with a river crashing through the roof.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.