A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Art installations, derelict railcars, and endangered grasshoppers all call this south Berlin park home.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

The world's first motorway was used as a racetrack until the late 1990s.

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

You've probably seen these distinctive orange-tiled columns on the big screen.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

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

The non-native bovine herd was brought in to help conserve these Berlin wetlands.

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

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

Berlin's old airport.

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

This monumental work of art symbolizes the coming together of a previously divided city.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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

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

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

A fascinating insight into daily life in the Eastern Bloc.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.