The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

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

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

Tiny memorials honor individual victims of the Holocaust.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

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

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

A monument to the man who almost killed Hitler.

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

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.

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

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

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.

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.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

Super-heavy Nazi architectural experiment.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.