Places Bathynomus Wants to Go

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

The world’s first interactive human body museum also serves as a chair for a giant orange man.

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

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

A former plague hospital turned medical museum.

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

Colorful and chaotic stacked hotel in North Holland.

A beautiful maze marks where three countries meet.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

Finally reunited, the three effigies now stand in a museum courtyard.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

Stockholm's last remaining paternoster elevator.

Stockholm's narrowest alley is barely over two feet wide.

The single richest source of elemental discoveries in the world.

It's always game time at Stockholm's only museum devoted solely to video games.