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

A massive relic of the communist era of Berlin.

Check the time in 145 countries at once with this East German relic.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

A small hippo-shaped fountain in Berlin, Germany.

The best bagels in Berlin are tucked away in an independent bookstore.

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

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

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

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

A series of sculptures, “sitting” directly on top of Berlin's existing street lamps, addressing the overlooked topic of urban light pollution.

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

This sprawling stone mosaic on Berlin’s Museum Island transforms archaeological finds and local legends into a walkable work of art.

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

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

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

Floating swimming pool within a moored vessel.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

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

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

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

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.