Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The fairy tale castle of the "fairy-tale king."

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This overgrown mountain village has been abandoned for nearly a century.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

The national park was once a plantation estate.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Home to items never before seen by the public.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Natural cathedral designed by Italian artist Giuliano Mauri.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

The location of the last witch trials of Italy, known as "The Salem of Europe."

The underground sanctuary of a mysterious ancient cult.