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

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

The curious underground history of keeping Paris clean.

The history of radiation is on safe display at the foot of a radiation science laboratory.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

Inside a former cabaret, seven floors of erotic art.

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

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

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

A surrealist timepiece by the artist of melting clocks.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

A medieval fresco which reminds visitors that death will come for us all.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Statue of death tucked in the University of Medicine courtyard.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

Abandoned railway line circling the city of Paris.

A museum of magic with a Sadist past.

A mechanized clock where a man fights off a dragon, crab, and rooster.