Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Ancient pueblos built into the base of a natural canyon wall.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

People have been placing babies on these lilies for photoshoots since the Victorian era.

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

Home to the world's oldest functioning orrery.

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

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

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

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

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

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

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

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

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

Colorful and chaotic stacked hotel in North Holland.

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