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

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

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

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

Quito's historic, main square dates back to the 16th century.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

In this pristine Ecuadorian hippie town, residents remain active well into their eighties and nineties.

This small uninhabited island offers Galapagos-like biodiversity.

Massive volcano in the Andes is the farthest point from earth's center.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

A turquoise lake within a volcanic crater.

The largest caravanserai in Cyprus also includes amazing examples of Ottoman architecture.

The animals wander freely amid this gorgeous stretch of nature.

This no man's land slicing through the island is strewn with abandoned relics of another time.

The ruins of a fairytale castle with a tumultuous history stand high atop the mountains.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

Breathtaking Byzantine paintings cover the inside of this 12th-century church.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

Perched above the bustling town of Kerak is a sprawling, ruinous castle that has witnessed nearly a millennia of Levantine history.

The remains of three different ancient civilizations have been found at this rich archaeological site.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.