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

Puppet theater and museum holding a collection of more than 300.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

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

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

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

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

Super-heavy Nazi architectural experiment.

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

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A wunderkammer of mysterious objects and stories.

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 bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

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.

The most visited, and possibly most controversial, museum in Germany.

A slice of central Asia in the middle of Berlin.

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

The last king of Poland was interred in this church nearly 200 years after his death.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

This extensive collection covers thousands of years of Polish military history.