One of only two commuter aerial tramways in the United States.

Elevated freight railway turned wildly successful urban park.

A crumbling hospital from the 1850s on Roosevelt Island.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

Designed to resemble foreign architecture, this mosque-looking structure was used to pump water to a royal fountain.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

After local authorities changed the design, the building's architect, Le Corbusier, wanted nothing to do with it.

The bridge that cost Germany a World Heritage Site.

A Syrian family keeps memories of their homeland alive at this sweet shop.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

An ornate century-old elevator still connects the two halves of Bad Schandau.

A towering monument to war, located on a beautifully peaceful hill.

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

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

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

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

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

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

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