Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

Indents in the pavement are all that remain from a grisly death machine in Paris.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

France's national museum of scientific and industrial instruments.

A museum of magic with a Sadist past.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

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

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

Notorious artist squat renovated into legal studios.

This massive library holds what was once the largest book collection in the world.

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

A watering hole where the options for seating include a bar, patio, or subterranean cave.

Former 1954 Del Mar Train Station now serves signature cocktails and delightful culinary treats, and still operates as a Metro stop.

A cake-themed art installation tucked away in historic Chinatown.

This store is dedicated to unique found footage and the strangeness of pre-internet pop-culture.

A dwindling menagerie of anthropomorphic oil derrick animals still dot the barren California landscape.

A music-filled, booze-soaked oasis in the desert.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.