Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

A 200-year-old collection of medical paraphernalia in a historic house.

A remarkable cabinet of curiosities in an art space in the center of Berlin.

Come stay at a live-in art installation.

A museum dedicated to a Cold War era sausage.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

This classic restaurant features a gorgeous mirror-clad room.

Metro station with a claim to rock n' roll fame.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

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

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.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

A wunderkammer of mysterious objects and stories.

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

A surreal museum of extraordinary industrial objects.

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

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

Thousands of miniature bronze sculptures have taken over this city square creating a unique art installation.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

The world's largest moose statue towers above the highway between Oslo and Trondheim.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.