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

The bridges portrayed on EU currency aren't fictional anymore.

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

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

“And the Lord said unto Johan, build for thee an ark for the end of the world is approaching.”

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

A public urinal so pretty, it was declared a national monument.

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

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

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

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

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

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

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

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

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

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

This unattributed sculpture in Amsterdam is hiding in plain sight.

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