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

This small red school was where Germany signed their surrender during WWII.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

The world's largest boar is a huge steel titan found at a French rest stop.

The world's first combination ski slope and power plant.

Old Danish castle immortalized in Shakespeare's Hamlet.

Six beautiful wooden giants are hidden around Copenhagen.

The traveling wares of Denmark's most famous author.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

The final resting place of one of the brightest physicists of the 20th century.

A mocking tribute to the past and modern leadership of Prague.

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

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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

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

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

This spooky statue sits outside a famous Prague theater.

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.

Macabre astrological automaton clock dating to the late 1400s.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.