Where lovers tie birch branches into long-lived knots.

The birthplace of most all of Europe's space missions is here on the Dutch coast.

Mosaics created from 11 million cigar bands.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

Science meets wall art to highlight the beauty of famous mathematical equations.

The largest 19th century panorama in the world still in-situ.

The world's first floating farm is staffed by one human, three robots, and 35 cows.

This medieval castle was painted pink as part of a now-abandoned children's theme park.

A 1:20 scale piece of the Netherlands commissioned by a queen lets visitors take a stroll as giants.

Home to the world's oldest functioning orrery.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

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

A bizarre form of natural mummification was discovered in the church of this Frisian village.

Live out your childhood construction fantasies in this one-of-a-kind gyrating hotel.

Strange secondhand shop showcasing taxidermy and oddies

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

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

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

Pull up and have a drink at a museum filled with hundreds of years worth of shipwreck artifacts.

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

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

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

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

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.