This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

An old department store turned Nazi prison turned artist commune.

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

Tiny memorials honor individual victims of the Holocaust.

A monument to the man who almost killed Hitler.

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

The final resting place of many of Germany's most famous communists.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

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

Berlin's old airport.

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.

Floating swimming pool within a moored vessel.

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

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

A museum dedicated to a Cold War era sausage.

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.

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

Thousands of coffin-like pillars make up this controversial Holocaust memorial.