Graffiti covers the walls of a room where university students through the centuries have waited nervously to defend their theses.

This public library and its impressive collection of academic books have not changed since the 17th century.

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

One of the oldest masonic temples in the Netherlands, built in 1757.

This small museum collects the Christian remembrances which would otherwise be forgotten.

A retail shop has preserved the 17th-century food cellar from the old building it now occupies.

Once housed in the towers of this Gothic church, this 17th century clock still ticks today.

Yup, that's a 330-foot yacht passing over the highway.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

A grassy pyramid named after a French battle.

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

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

The largest flower auction house in the world.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

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

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A beer pipeline runs beneath Bruges.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

Tucked away in the Leiden city hall are a group of works by famed artist MC Escher.