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

A wonderland of folk art including the World’s Largest Grit. 

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

These eerie outliers of the lightning bug family glow a mysterious blue color.

The highest point in South Carolina was once owned by an energy company that neglected it but now the state is taking it back.

This bridge is haunted by the ghost of a distraught mother.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

An impressive collection is dedicated to the legendary beast.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This structure among the trees was the result of divine inspiration.

North Carolina's finest examples of Native American pictographs have survived for 5,000 years.

This vast kitty-themed collection illustrates the history of human-cat interaction.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

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

All that's left of the quintessential "cabin in the woods."

This former maximum-security prison is creepy, sobering, and supposedly haunted.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A historic dam made famous for its turbines and feature in a Hollywood classic.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

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