Yugoslavia's biggest underground airport lies in ruins.

This classic restaurant features a gorgeous mirror-clad room.

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

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

Come stay at a live-in art installation.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Reminders of the Battle of Berlin still scar the railway.

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

A museum dedicated to a Cold War era sausage.

This sprawling Jewish cemetery is one of the largest in Europe.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

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

When German-Iraqi relations broke down, this embassy was vacated post haste.

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

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

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

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

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

Super-heavy Nazi architectural experiment.

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.

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

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.