These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The fountain marks the area where hundreds of accused witches were burned at the stake.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This automated sculpture of two men peeing will spell out text messages with their micturition.

The hidden lair of an alchemist rediscovered in a 2002 flood.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Real bones which are said to have belonged to a Polish dragon.

Two stunning 17th-century libraries and a cabinet of curiosities.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Countless grotesque faces stare out from this eerie Prague art wall.

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

A surreal statue honoring Prague's favorite literary son.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

Cold war icon and onetime "hole" in the iron curtain.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Ship-sized kinetic sculptural fantasy.

Eighty million natural history specimens call this gargantuan museum home.

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

Daily jousts and dancing barrel makers in Munich's mechanical clock.