This Dutch art piece became a Russian icon.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

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

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

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

A true Valhalla for cactus and succulent lovers.

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.

A beautiful maze marks where three countries meet.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

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

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

The world's only museum devoted to the wonders of fluorescence.