Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

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

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

Gladiators once walked this ancient, subterranean passage.

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

Where commuters walk through remnants of an ancient Greek necropolis.

This abandoned shopping arcade has new life as an art installation.

A sharp sculpture made of thousands of pieces of jagged glass.

What once sat in the world’s spotlight is today a largely disused ghost complex.

The ruins of a fifth-century church dedicated to Our Lady of the Harbor.

An ancient necropolis of magnificent tombs.

A crumbling ghost town with prime views of the dam that doomed it.

This sea stack in Cyprus is traditionally seen as the birthplace of the goddess Aphrodite.

This museum in a shuttered train station remembers the island's forgotten rail system.

These ruins disappear beneath the waves every winter.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

A 4th-century Roman church complete with a hidden underground cave.

A secluded oasis of contemporary art and natural beauty.

This abandoned church was the site of one of the biggest art heists of the past decades.

This famous archeological mystery may be an ancient example of movable type.

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

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

Learn about the sweet, storied legacy of beekeeping in ancient Greece.