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

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

Tour the sci-fi-esque reality of governmental disease management.

An abandoned town is hidden in Great Smoky Mountains National Park.

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

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

This stone memorial pays tribute to a massive shipwreck which was sadly overshadowed by the death of John Wilkes Booth.

A vast collection of rare, historical, and vintage supercomputers.

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

The secret city built by the Manhattan Project.

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

A man's home is his castle.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

This 12-foot-tall T-rex is the largest K’Nex skeleton sculpture in the world.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

Enormous lake at the bottom of a unique cave system.

An impressive collection is dedicated to the legendary beast.

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

Visit this playground of waterfalls, caves and sinkholes.