This one-room schoolhouse in rural Arkansas dates to the 1920s, but looks like it could be the 1820s.

Local legend says that someone is buried in the trunk.

The remains of the first public diamond mine in Arkansas.

On the side of Arkansas' Great River Road stand the remains of a forgotten World War II POW Camp.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

A peaceful place in the woods where everything is a work in progress.

An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

The Ozarks' strangest dwelling.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

This highway overpass was named after the tragic disappearance of a young mother who got mixed up with the wrong people.

A natural rock formation believed to be a cure-all.

This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

A peculiar forest that was handcrafted for government experiments.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

This former mining town was named the most toxic town in America.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

An acoustic anomaly with a mysterious cause.

Destroyed by flood waters, prison now serves as a training ground for armed forces.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.