A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

The final resting place of the famed German pilot, the "Red Baron."

This tremendous timepiece was once the largest cuckoo clock in the world.

This demon atop the Notre-Dame de Paris looks utterly bored.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

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

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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

Monument to a suicide protesting the Soviet invasion.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

A typical crusty old museum this isn't.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

Rows of stone statues are dressed up to mourn children that are lost before birth.

A high-octane shrine to the greatest Texans who ever lived.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.