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

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.

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

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

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

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

Abandoned railway line circling the city of Paris.

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

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

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

Notorious artist squat renovated into legal studios.

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

The secret wartime bunker built on the platforms of an abandoned Tube station.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

The anatomical-pathological collection of a man who changed surgery.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

A historic hill of tall tales, with one rather special tree.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

A unique tribute to the millions of animals who served and died for the British military.

A statue of the original Pearly King is hidden in a church's crypt.

This overlooked street light once served as a KGB dead letter box.