This picturesque Umbrian city has a subterranean side that has long remained hidden.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

This is not your typical jungle gym.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.