This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.

This abandoned ironworks was once the most important military supplier in America.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

The remains of what was once the world's steepest passenger funicular.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

This abandoned factory on the Hudson River once churned out a million bricks a week.

A tribute to Ponce de Leon's supposed quest for eternal youth.

This abandoned mine and power plant was built atop land once given to Revolutionary War soldiers.

An abandoned asylum incorporated into a college campus.

This schoolhouse for Black American children is one of the oldest remaining in southeastern Ohio.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

Ancient human, animal, and geometric figures drawn in the earth.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

Curious cave that stays a cool 56 degrees all year long.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.