A stone copper was sculpted on the wall of the Carlisle Cathedral to honor a local hero.

An installation that makes understanding the size of the universe a walk in the park.

Though they might seem like arbitrary scratches in the wall, these were once official measures of length.

Banished from town, this local jester concocted a clever return.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

It's good luck to be mocked by this monkey.

A larger-than-life monument to the inventor of the Bunsen burner.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

This lurid German fountain plots the sad course of marriage from dating to death.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This spooky statue sits outside a famous Prague theater.

Macabre astrological automaton clock dating to the late 1400s.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This enchanting mountain plateau celebrates spooky local folklore.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

Twisted buildings adorn the banks of the Rhine river.

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

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

The burial place of 14 of the executed leaders of the Easter Rising.