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

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

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

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

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 collection of abandoned typographic signs from Berlin and beyond.

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

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

Art and a pun, all in one.

A wunderkammer of mysterious objects and stories.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A surreal museum of extraordinary industrial objects.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

An eerie, derelict amusement park in Berlin.

A bizarre house filled with an astounding array of collections.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

Abandoned power station once home to a squatter community, now being developed into an arts center.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Reverend Jen's unique museum/living room showcases her troll collection.

Final resting place of two dozen New York City harbor ships.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.