Vines grow up the metal bars in this public park created from an old machine factory.

A unique collection of Swiss art brut and naïve art displayed in an old warehouse.

One man's personal kunstkammer, museum and shop.

Model Trains and Much More in Hamburg.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

Copenhagen's celebrated theme park and gardens.

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

Antique frame collection with 2,400 frames.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

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

A monument to the man who almost killed Hitler.

A 12th-century fortress containing some of Berlin's oldest buildings.

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

A surreal museum of extraordinary industrial objects.

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

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

This statue of a Hindu cosmic dancer at CERN is a metaphor for modern physics.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Natural history museum displaying a famous taxidermied St. Bernard.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.