Building Men of War and Indiamen from Holland's Golden Age.

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

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

This giant wire frame man sculpture is crouched in contemplation.

An idyllic hotel that gave its name to a supposed shadow government.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The Rozenberg wind wall in South Holland makes for smooth sailing through the Calandbrug canal.

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

This enormous storm barrier is one of the largest moving structures on Earth, with each arm taller than the Washington Monument.

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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

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

A set of 27 bamboo tubes creates an eerie soundscape that changes with the wind.

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

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

The largest flower auction house in the world.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

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

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

A luxury hotel housed in a former 15th century Gothic church.

Amsterdam's former hotspot for public executions and dissections.

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