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

A grassy pyramid named after a French battle.

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

Where lovers tie birch branches into long-lived knots.

An impressive array of unique homemade planetariums.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

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

Unchanged for centuries, this medieval library keeps its books in chains.

A long-closed church turned into a saintly skate park.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

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