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

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

Ruins of a historic medical facility sits eerily by the water.

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

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

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

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

This top secret Chinese military megaproject is the world’s largest human-made tunnel structure.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An abandoned swimming pool decays on the outskirts of Berlin.

This classic restaurant features a gorgeous mirror-clad room.

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

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

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

An eerie, derelict amusement park in Berlin.

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

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

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

This uncanny fresco celebrating the "triumph of death" was split into four pieces to be moved to another museum.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

The 953 windows undoubtedly make this the world's most beautiful screened porch.