This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

Where commuters walk through remnants of an ancient Greek necropolis.

Tiny memorials honor individual victims of the Holocaust.

Metro station with a claim to rock n' roll fame.

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

The only microgravity tower in Europe can produce nine seconds of weightlessness.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Come for the speed, leave in love with the desert.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

This monument marks where the exact middle of the world used to be.

Why walk on this historical site when you can zoom down instead?

Striking occult iconography on a medieval German church.

A symbol of Islam in oil-rich Brunei.

In this Borneo cave, it's not the thousands of bats you need to worry about, it's the blankets of roaches.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

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

Famously misunderstood wonder of the ancient world

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

Malaysia's floating mosque.