At this exhibit on the world of poison, venomous animals steal the show.

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

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

The bridge that cost Germany a World Heritage Site.

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.

Super-heavy Nazi architectural experiment.

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

A small but immensely extravagant palace built by the "Night King."

This "floating railway" is one of the world's oldest monorail systems.

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

A striking 12th-century-style castle built on the edge of a cliff.

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