While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The oldest operating pharmacy in the world features 800-year-old recipes.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A surreal museum of extraordinary industrial objects.

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

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

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

Notorious artist squat renovated into legal studios.

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.

A tongue-in-cheek arcade where the games are based on everyday life.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

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

One part local history, 99 parts gruesome haunted house.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A kaleidoscopic warehouse-maze of handmade neon signs.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This coffee shop lies hidden beneath a historic church.