An unfinished rail tunnel that has since been used to house cheese and bats.

Moonbows over Kentucky.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

An art instillation for the sake of "raising vibrations."

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

This museum pays tribute to the Cherokee leader who created a written language for his people.

The scant remains of this flooded historic village can be explored in one of the most remote areas of the Great Smokies.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

This improbable contraption was passed down through five generations of industrious Tennesseans.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.