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.

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

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

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.

A charming beach town in Turkey captures all the colors of the rainbow.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

The most metal church of all time was built in record time because of an international, pious pissing contest.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

What happens when you cross a mayor and a painter?

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

On top of a resort town as old as the Bronze Age sits an incredible war memorial statue overlooking the beaches below.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

A 11-foot former president stands on a Kosovo street that also bears his name.

Two distorted Romanesque columns hold aloft a mine cart in honor of laborers who died during WWII.

A futuristic, brutalist masterpiece that is also strangely prison-like.

A public work of art that also provides some relief from the summer heat.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.