The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'

An abandoned railroad tunnel forgotten by time awaits inquisitive hikers.

This mysterious twin turboprop Grumman G-159 covered in graffiti has spent a decade and a half abandoned.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

This old ruin once served as a post office, a train station, a restaurant, and a bridge to the Atomic Age.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Hidden in the Chihuahuan Desert resides an amazing collection of petroglyphs.

This bird-shaped rock formation defies gravity, time, and classification.

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

Crumbling remnants of what was once a booming town full of silver.

In 1967, murder and mayhem disrupted the tranquility along this quiet stretch of Old Route 66.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

In a largely deserted ghost town, a little brick building recalls its history as a gold rush hub and haven for outlaws.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

One of the American Southwest's most extensive collections of Navajo rock art.

More than 21,000 images fill this overlooked gem of a prehistoric site.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

Some of the Old West's most notorious outlaws frequented this mining town.

This sparsely populated town offers a look back in time.

A restored 114-year-old railroad station heralded as the most photographed depot in the United States.