The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

An elevator into the Baltic Sea.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

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

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

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

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

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

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

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

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.