This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

A Museum of Psychiatry in a still-operating mental institution.

Christ's blood allegedly preserved in a Belgian town.

Wind power station for making famous Ketel One vodka.

Museum preserving torture methods from the past.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.

A beautifully eclectic mix of architectural styles.

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

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Amsterdam's Red Light District leaves little to the imagination.

A unique collection of gilded age mechanical pianos.

This basement museum explores the art and artistry of fascism.

The attic of a four-century-old canal house hides a clandestine church.

A floating cat sanctuary on an Amsterdam canal.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A grassy pyramid named after a French battle.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

This painted Lego bridge is the product of over a century of locomotive history.

Two gravestones clasp hands over the religious divide.

This futuristic German television spire is actually the world's largest digital clock.

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

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.