This unattributed sculpture in Amsterdam is hiding in plain sight.

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

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

This historical Netherlands fortress still bears the marks of its single siege.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

Colorful and chaotic stacked hotel in North Holland.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

Made of 41,900 pieces of mosaic, it took two years to piece together this giant egg.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A huge old mansion full of thousands of toys, each there to be used and played with.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

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

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

This ghost town in Belgium will lose its street art when it ceases to exist.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

The site of the first medieval crusade that pitted Christians against Christians.