The self-mummified monks of Japan.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A marvel of Byzantine engineering under the streets of Istanbul.

Burial site more than 300 years old.

Ancient church constructed with a special wood that preserves prints from the past.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Prehistoric animals decorate this popular outdoor park.

Home of an evil witch famous within southern folklore.

One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Ruins of a Carnegie family mansion on Cumberland Island.

A historic covered bridge, only one of two remaining in North Carolina.

Railroad came. People came. Railroad left. Town died.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.