A mysterious light of unknown origin on the backroads of Missouri.

Ruins of the Crusaders' headquarters.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A hacienda that features all things uniquely Yucatán.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

A flooded Mexican cave that hides a river beneath the water.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

The wild west is still alive and well at this authentic mining town watering hole.

Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

A 1920s speakeasy that had rum runners racing up and down the shores of California.

The second oldest continuously operating bar in Louisiana.

Pizza joint known for labor-inducing salad dressing.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Mountain known by the Tillamook Tribe as "the place of the supreme deity."

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

Scholar, adventurer, saint, and instigator of the Goa Inquisition.

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

The mummified relic of St. Catherine sits forever on a golden throne.

Perhaps the most beautiful of preserved saints, with a little help from Paris.