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

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

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

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

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

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

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

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

Abandoned railway line circling the city of Paris.

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

Notorious artist squat renovated into legal studios.

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

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

Death comes to anyone who dares to touch this concrete column.

This quirky curiosity shop takes its cues from the world's bazaars.

Oldest unrestored plantation house in America that is open to the public.

Settled in 1696, abandoned after the Revolutionary War.