A market built atop boats is one of the few floating holiday markets in Europe.

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

A collection of biblical memorabilia.

This historical Netherlands fortress still bears the marks of its single siege.

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

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

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

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

Peek through a transparent pyramid and drink in the mountain made of books.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

World's largest collection of serial killer artwork and other macabre exhibits.

Where the lovelorn find a home for their sentimental keepsakes.

A tall karst islet popularized by 007.

A white Buddhist temple with a golden restroom.

Singapore's landscaping project is home to 18 incredible Supertrees.

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.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

On the Oregon coast there is a natural hole that seems to be draining the sea.