The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

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

Paris' linguistic guide to the international language of, yes, love.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Museum about life, death, and cannibalism in the Stone Age.

The decaying ruins of Wales' first asylum for the mentally ill.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

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

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Banksy gives themself artistic license with this piece of London street art.

Repository for more than 22 million pickled specimens.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

A historic house left in "dramatic still life."

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.