A mocking tribute to the past and modern leadership of Prague.

An Orwellian sculpture with eyeball cameras watches passersby.

A Jenga-style cylindrical tower of books that appears to go on forever.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This outdoor library provides around-the-clock access to around 7,000 books.

This old wooden funicular railway leads to a cemetery in the forest.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

Remnants of a cone-shaped Nazi bomb shelter.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

The world's largest reflecting pool is just two centimeters deep.

Dine amidst exotic plants at this former royal greenhouse.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

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

Rare karst landscape eroded from a flat seabed.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

A rare example of World War I trenches from the British front.

The Devil’s own choice when he needs a drink in Brussels.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.