This German bone house contains the remains of some 20,000 souls.

The footprint of a frustrated devil in Munich's Cathedral.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

An elevator into the Baltic Sea.

The prototype for all Nazi concentration camps.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

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.

One of downtown Berlin's last reminders of its Communist past.

Terrifying derelict military hospital once housed a recuperating Hitler.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

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

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

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

A restaurant and observation deck built in a unique broadcasting antenna.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

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.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

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.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Berlin's old airport.