A strangely curved lamppost stands tall over this avenue in Rotterdam.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The final resting place for the remains of 143 Habsburg royalty.

The beautiful baroque library of the Hapsburg empire.

In the Netherlands, one of the world's largest private car collections can be found.

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

This elaborate hole in the ground was built as a sacred site for an ancient civilization.

A true Valhalla for cactus and succulent lovers.

A statue of the second-tallest Dutchman in history.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Giant, friendly pelicans in Central London, the most unlikely of places.

One part local history, 99 parts gruesome haunted house.

A hands-off space for graffiti artists to hone and display their skills.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

“And the Lord said unto Johan, build for thee an ark for the end of the world is approaching.”

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

The 20-mile causeway that separates the Netherlands from the sea.

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

A miniature city, once ruled by the Queen of the Netherlands.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.