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

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

A brush maker used his factory to protect blind Jews from the Gestapo.

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

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

Berlin's old airport.

Floating swimming pool within a moored vessel.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

This classic restaurant features a gorgeous mirror-clad room.

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

Art and a pun, all in one.

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

A fascinating insight into daily life in the Eastern Bloc.

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

Where once there was a train station bathroom, there is now this German burger joint.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

An eerie, derelict amusement park in Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

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

A slice of central Asia in the middle of Berlin.