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

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

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

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

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.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

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

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

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

The hallucinogenic center of the ancient world.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

Epicurean and holy traditions converge in what may be the oldest restaurant in Europe.

Austria’s oldest brewery makes beer with flaming-hot granite.

The amazing wonder cabinets of a very rich Austrian archbishop.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

"World machine" built by an untrained Austrian farmer.

American soldiers discovered Europe's best one-liner at the end of World War II.

Visiting this café is like visiting the Austrian grandma you wish you had.

The solemn exterior conceals an opulent interior of this 17th century church.

An Austrian house of bones filled with hundreds of intricately painted skulls.