An elevator into the Baltic Sea.

The prototype for all Nazi concentration camps.

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

No need to strap in for a "ride" on this walkable roller coaster.

Floating swimming pool within a moored vessel.

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

Terrifying derelict military hospital once housed a recuperating Hitler.

This historic stone bridge has an entire neighborhood clinging to its sides.

Super-heavy Nazi architectural experiment.

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

A church filled with the bones of hundreds of virgins martyrs—or so they say.

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

An intricate and amazing house built by architect Karl Junker.

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

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

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

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

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A fascinating insight into daily life in the Eastern Bloc.

A collection of abandoned typographic signs from Berlin and beyond.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Ruins of a German Castle on top of a towering stone pillar.

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