Spitfire airplanes with butterfly wings hover over Prague’s skyline.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

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

A series of playful yellow penguins share a serious message about the environment.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

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

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

A surreal statue honoring Prague's favorite literary son.

Macabre astrological automaton clock dating to the late 1400s.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

This spooky statue sits outside a famous Prague theater.

A historic and beautiful Art Nouveau chamber in a historic railway station.

The prototype for all Nazi concentration camps.

The footprint of a frustrated devil in Munich's Cathedral.

A fearsome dragon clings to a corner of Munich's city hall.

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

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

No need to strap in for a “ride” on this walkable roller coaster.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

This beloved American snack was conceived by a hungry coal miner.