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.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The only diamond mine in the world where you can keep what you find.

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

Less a museum than a bizarre fantasy world created by artists and engineers.

A floating museum that was sunk by a flood and left to rot in the tides.

An abandoned factory along the Mississippi coated by a giant mural.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A kitschy, creepy St. Louis mainstay.

An abandoned meat mecca now serves as an excellent locale for urban exploration.

Man-made geyser that rises to the exact height of the Gateway Arch.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

The highest point in Florida is still the lowest high point in the country.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A local landmark with generations of spraypainted messages, and more being added each day.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.