Stroll through retro Paris while shopping for old postcards and discarded doll heads.

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

A surrealist timepiece by the artist of melting clocks.

A museum of magic with a Sadist past.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

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

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

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Abandoned railway line circling the city of Paris.

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 macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

Visit the site of a subway powered by nothing more than air--and lots of it.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

The "Seinfeld" diner.

Walk over a 150 year old manhole.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.