Tiny memorials honor individual victims of the Holocaust.

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.

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

Berlin's old airport.

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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