Striking occult iconography on a medieval German church.

Retirement home for giant obsolete machines.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

It's always summer at the beach inside this former airship hangar.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

These 18th century gardens tell a rocky story of the son of Odysseus.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

An elevator into the Baltic Sea.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Living trees form the structure of an open-air palace.

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

A striking 12th-century-style castle built on the edge of a cliff.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

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

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An eerie, derelict amusement park in Berlin.

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