150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

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

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

An important example of architectural history slowly decays in the city center.

This building displays the scars of the “Dekemvriana,” a dark time in modern Greek history.

This Ottoman-era church is hidden amid a busy tourist area.

Underneath one of the region's most historic roads lies the home of Plato's successor.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

This graffitied 19th-century building was a prototype of European industrial architecture.

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

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

A Byzantine-era church hidden in a wooded area below the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

The ruined doorway is a portal to the building's turbulent and torturous past.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

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

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

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

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

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