The ancient abodes are a testament to human ingenuity amid harsh climates.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

This famous city eluded concrete detection until the early 2000's.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This abandoned Greek island was the last active leper colony in Europe.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

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

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.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

France's high-tech, future-themed amusement park.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

Peeing dogs guard the Roman hunting goddess atop a fountain at France’s Château de Fontainebleau.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The sunken structure looks like the victim of a catastrophic flood.

This is what trains will look like after the zombie apocalypse.