Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Colorful and chaotic stacked hotel in North Holland.

A beautiful maze marks where three countries meet.

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

A fantastical bed and breakfast with magically unique rooms.

Dummies recreate radiological discoveries from history.

The highest point in Belgium is a staircase to nowhere.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

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

This ghost town in Belgium will lose its street art when it ceases to exist.

Lavish royal estate punctuated with heated greenhouses.

Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

This enormous abandoned prison was once dubbed the "Bastille of Romania."

This Romanian village may have been drowned, but it is long from forgotten.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

No one knows who built this strange cave of worship or exactly why.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."