A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

Hideout of thieves, monks, and goat-footed gods.

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.

An ancient octagonal weather station named for the eight Greek gods of wind.

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

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

Giant marble phalluses on the sacred island of antiquity.

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

This ancient hydrological marvel is now the base of a modern outdoor cinema.

This legendary city has been a tourist attraction for centuries.

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

A spectacular cave and a beguiling lake.

The hallucinogenic center of the ancient world.

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

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Museum in a swimming pool where the water still flows.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

An aluminum skeleton brings Chinese mythology to the French shore.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.