When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

The ghost town where the villagers refuse to leave.

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Eighty million natural history specimens call this gargantuan museum home.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

A statue of the second-tallest Dutchman in history.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

This spooky statue sits outside a famous Prague theater.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Remnants of a cone-shaped Nazi bomb shelter.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.