This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A little sculpture with a large wardrobe.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Mountain where Jesus was first tempted by the Devil.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Marked by the hand of the explorer Henry Morton Stanley.

A marvel of Byzantine engineering under the streets of Istanbul.

Mausoleum and Holy Seat of Antiochus I of Commagene.

Architectureal fantasy quarter of Rome.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

An alchemist's “magic door” stands in the middle of a Roman park.

An ancient Egyptian temple in the middle of Madrid, Spain.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Macabre astrological automaton clock dating to the late 1400s.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

A museum which takes visitors to the côté obscure of Paris.

A cluttered and astounding collection of antiquities and curiosities.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

These "anatomical machines" are only one of the many strange items in this Italian crypt.