First planned industrial community in the United States.

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

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

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

With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

The hallucinogenic center of the ancient world.

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

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

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

The only ancient site that remains on the south bank of the sacred Ilissos river.

Gladiators once walked this ancient, subterranean passage.

Rest stops along this pathway offer some of the best views of the Acropolis of Athens.

An ancient Greek monument and a Byzantine church coexist inside this cave.

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

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

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

Home to a protest movement, a bombing, and a dramatic change in labor history.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

One of the largest legal spray spots in Hamburg.

A towering monument to war, located on a beautifully peaceful hill.

Berlin's old airport.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.