A striking 12th-century-style castle built on the edge of a cliff.

When the rain falls, this drain system turns into a musical instrument.

Living trees form the structure of an open-air palace.

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

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

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

Art and a pun, all in one.

A small but immensely extravagant palace built by the "Night King."

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

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

A collection of abandoned typographic signs from Berlin and beyond.

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

This classic restaurant features a gorgeous mirror-clad room.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A slice of central Asia in the middle of Berlin.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

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

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

An eerie, derelict amusement park in Berlin.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.