One of the most photographed locations in the entire city.

These caves secretly held national treasures during World War II.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

Legend says this sacred tree was a gift from goddess Athena.

An abandoned Byzantine fortress and notorious prison.

This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

A little-known park with unusual, half-ruined structures and a mystical energy.

A two thousand year old brothel uncovered in Northern Greece.

These ruins in Volvi were once at the intersection of the Eastern and Western Worlds.

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

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

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

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

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

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

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

The hallucinogenic center of the ancient world.

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

Gigantic water vessel, permanently grounded in Southern Albania.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.