A strange rock formation with numerous legends trying to explain it.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

A once-magnificent collegiate church is falling into ruin.

Watch the local Netherlands birds from inside this giant eco-egg.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

This Belgian palace was long the domain of priests and aristocrats but is now being turned into an art commune.

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

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

At this unusual park, domes, ladders, chairs, and more are made from trees.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Incredible labyrinth of man made caves.

This historical Netherlands fortress still bears the marks of its single siege.

This bike path was sunk below water level for maximum wonder.

A luxury hotel housed in a former 15th century Gothic church.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A beautiful maze marks where three countries meet.

Peek through a transparent pyramid and drink in the mountain made of books.

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

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

Strange secondhand shop showcasing taxidermy and oddies

A preserved building where the dead were once watched for signs of life.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

Elegant marble and old vaults fill this historic Dutch bank turned office space.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.