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

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

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

The largest 19th century panorama in the world still in-situ.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.

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

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

A collection of biblical memorabilia.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

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

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Incredible labyrinth of man made caves.

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

Amsterdam's former hotspot for public executions and dissections.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

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.

Colorful and chaotic stacked hotel in North Holland.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

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

The attic of a four-century-old canal house hides a clandestine church.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

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