A solemn reminder of the infamous World War II war crime that massacred almost all the men in a small Greek town.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

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

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

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.

The oldest olive tree in Greece has been bearing fruit for at least 2,000 years.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

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

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

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

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 curious, round temple is the oldest still-standing marble building in Rome.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

This statue is the only female representation of Rome's "talking statues."

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The glowing blue Nymphaeum of Emperor Tiberius.