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.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

A museum specifically dedicated to the Trabant, one of the iconic automobiles of the GDR.

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

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

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

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

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.

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

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

Berlin's old airport.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

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.

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