A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

This conical hill was built as a testing ground for an engineer known as the Glider King.

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

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

Berlin's old airport.

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

Super-heavy Nazi architectural experiment.

A museum dedicated to a Cold War era sausage.

A fascinating insight into daily life in the Eastern Bloc.

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

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

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

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

An eerie, derelict amusement park in Berlin.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

Tiny memorials honor individual victims of the Holocaust.

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

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

A monument to the man who almost killed Hitler.

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

A surreal museum of extraordinary industrial objects.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

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

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