A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This demon atop the Notre-Dame de Paris looks utterly bored.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

A phantasmagoric tomb honors a Belgian artist-scientist's contributions to the world of spooky entertainment.

France's most famous cemetery, with some of its most curious tombs.

This 19th-century fountain features sculptures of little gnomes that help with chores.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The prototype for all Nazi concentration camps.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A unique bridge with an equally unique view.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

The hallowed ground of one of the worst atrocities in United States history.

Massive still life just off the highway in Kansas.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.