Super-heavy Nazi architectural experiment.

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

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

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

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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

A fascinating insight into daily life in the Eastern Bloc.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

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

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

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

An eerie, derelict amusement park in Berlin.

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

This classic restaurant features a gorgeous mirror-clad room.

A surreal museum of extraordinary industrial objects.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

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

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

Hundreds of caves once used to store grains and animal feed.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

A musical instrument played by the sea.

Where the lovelorn find a home for their sentimental keepsakes.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.