A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

The remains of a medieval wall discovered in the basement of a jewelry store.

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

Science meets wall art to highlight the beauty of famous mathematical equations.

Only a few walls remain of the last church the Pilgrims used before they sailed to North America.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

It's forbidden to dig within this ancient Roman fort hidden beneath a playground.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

A uniquely preserved neo-Gothic church that is now home to a collection of art and woodcarvings.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

The cutest way to stay safe in traffic.

This functional solar system model was inspired by the famous Eisinga Planetarium.

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

A journey through 430 years of bulbiculture in the Netherlands.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

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

The place where houses are born.

The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

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.

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

Oldest Museum of the Netherlands is a true cabinet of curiosities.