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

Reminders of the Battle of Berlin still scar the railway.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

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

One of downtown Berlin's last reminders of its Communist past.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

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

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

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

Berlin's old airport.

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

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

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

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

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.

A fascinating insight into daily life in the Eastern Bloc.

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

A collection of abandoned typographic signs from Berlin and beyond.