A museum of magic with a Sadist past.

A haunting collection of the vanished and disappearing natural world.

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

A self-built mosaic house and sculpture park.

The first green space constructed on an elevated viaduct.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

The oldest stone house in Paris was built by its most famous alchemist.

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

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

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Thirty architectural gems from the 19th- and early 20th-century Tokyo were restored and relocated to this space.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A museum of carnival attractions where you are invited to ride the rides.

How did a French journalist’s grave become the sexiest statue in the cemetery?

Statue of death tucked in the University of Medicine courtyard.

Notorious artist squat renovated into legal studios.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

The Bristol Camera Obscura housed in an ancient windmill.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

You can spend the night in Dr. Frank-N-Furter's castle.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'