One of the world's heaviest musical instruments towers within a popular urban park.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

Tiny memorials honor individual victims of the Holocaust.

Metro station with a claim to rock n' roll fame.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Twisted buildings adorn the banks of the Rhine river.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

Cold war icon and onetime "hole" in the iron curtain.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

In this truly magical place, rent hasn't been raised since the year 1520.

The "Prussian Versailles" that is as glorious today as when it was built.

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

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

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

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

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

Berlin's old airport.

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

Floating swimming pool within a moored vessel.

The prototype for all Nazi concentration camps.