Small Island off the coast of Greenland.

The 3.8 billion-year-old rock proves that tectonic plates may have been shifting longer than we thought.

Poseidon? No one seems to know.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

The rocky remains of an ancient Greek forest.

Where commuters walk through remnants of an ancient Greek necropolis.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

An autonomous republic of Orthodox monks.

The ghost town where the villagers refuse to leave.

An alien landscape on the banks of the Aegean Sea.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

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

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This legendary city has been a tourist attraction for centuries.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A spectacular cave and a beguiling lake.

This Scandinavian island is the site of the first modern observatory.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

A meteorite-bounded town in Bavaria.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.