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

Georgia's highest point was given its strange name thanks to a simple translation error.

Once one of the largest producers of pig iron in the world.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

A four-hour holy-rolling, Hallelujah-shouting, Southern gospel service, rendered as a country market where "All Is Welcome, Jews, and Gentiles."

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

The highest point in Mississippi is a hilltop that was once used to bombard a nearby town with artillery.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

The world's longest known cave system.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

A beautiful geyser under environmental threat.

Towering basalt columns, a creation of fire and ice.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Stroll through a wonderland of stupendous moss-covered trees.

Elevated freight railway turned wildly successful urban park.