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

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

A bike traffic circle showcasing the works of local graffiti artists.

The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

A pair of giant stone heads represent the ancient Roman saints beheaded here.

This futuristic German television spire is actually the world's largest digital clock.

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

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

This pink watchtower served as the seat of the Greek government after independence from the Turks.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Arguably Belgrade's only example of pure Art Deco architecture.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

One of the world's oldest olive trees, thought to be over 2,000 years old.

Two buildings named after their windows that make it look like a sea of television sets plastered to a wall.

A pair of connected skyscrapers form this symbolic gateway.

A prison tower–like edifice honoring a beloved local benefactor.

A 150-year-old steam locomotive crosses the southern half of the island daily.

The most metal church of all time was built in record time because of an international, pious pissing contest.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.