This unique Renaissance castle was turned into a home for Nazi occultism.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

An elevator into the Baltic Sea.

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

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

When German-Iraqi relations broke down, this embassy was vacated post haste.

No need to strap in for a "ride" on this walkable roller coaster.

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

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

This historic stone bridge has an entire neighborhood clinging to its sides.

A small but immensely extravagant palace built by the "Night King."

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

This conical hill was built as a testing ground for an engineer known as the Glider King.

An intricate and amazing house built by architect Karl Junker.

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

"The most colorful grottoes of the world.

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

A church filled with the bones of hundreds of virgins martyrs—or so they say.

When the rain falls, this drain system turns into a musical instrument.

This "floating railway" is one of the world's oldest monorail systems.

A 12th-century fortress containing some of Berlin's oldest buildings.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

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