Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

15,000 year old bison sculptures.

This fascinating abbey is considered the oldest monastery in the region.

Sculpture of a legendary French dragon.

Sleep in a climate-controlled plastic bubble for the night.

700 iron sculptures crammed into a Mediterranean park.

An outsider folly near Madrid.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

100-windowed castle turned art gallery, built by one dedicated mason.

The history of German architecture is explored across this fairy-scale mini-city.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

At this cemetery, artists are invited to design their own gravestones.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

A charming and enigmatic sculpture of a lynx haunts the park of Kellinghusen.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

An intricate and amazing house built by architect Karl Junker.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

Striking occult iconography on a medieval German church.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

A giant floating rubber duck-bunny painted with a different design every year.

How one woman gave orphaned sculptures a new home in the city of Utrecht.