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

This Italian church is as beautiful as it is common, except for the real skulls decorating the many mannequins inside.

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

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

A fantastic castle rumored to be the birthplace of King Arthur.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

This former insane asylum now holds a pathological anatomy museum.

Private collection of art inspired by cabinets of curiosity.

One man's personal kunstkammer, museum and shop.

Lavish royal estate punctuated with heated greenhouses.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

Eyam took steps to quarantine themselves and keep the plague from spreading.

When methane gas started seeping up from the ground, they picked up and moved the entire town.

The ruin of a Japanese love hotel almost completely overgrown with brambles.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

Once the most densely populated place in the world, this island is now a ghost town.

Ruins of a German Castle on top of a towering stone pillar.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This notorious Canadian mental institution was home to some of the first LSD experiments and origin of the word "psychedelic."

The ancient tomb acts as a calendar that keeps perfect time.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

Grotto replete with mystical designs laid out in glued shell mosaics.