A retired tobacco farmer's pet project turned into a sturdy miniature city.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

Enormous lake at the bottom of a unique cave system.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

More than five miles of underground passageways.

A bizarre roadside attraction and the first instance of miniature golf in the world.

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

The first KFC is on the National Register of Historic Places.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

Largest display of Wesleyana anywhere in the world.

Hidden amid a collection of trails is the site of a tragic crash.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Moonbows over Kentucky.

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

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

Live long and prosper in Tennessee.

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

These early tent-shaped grave coverings are unique to Appalachia.

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

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

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

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

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