From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

This serene, turquoise lake in an extraordinary nature reserve showcases a rare natural phenomenon.

This massive rock balanced for thousands of years being tossed here during a volcanic eruption.

The marshy karst plain has reclaimed this beautiful 17th-century church.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

The city of Palestrina was built around this magnificent terraced sanctuary dedicated to the pagan goddess Fortuna.

A hospital where antique dolls are given new life.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

An alchemist's "magic door" stands in the middle of a Roman park.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.