This mill has survived a tumultuous past to still produce flour and cornmeal.

The largest spring in Northwest Arkansas is also home to a sprawling botanical gardens and a historically significant bluff.

The seventh largest spring in the world.

Home to a seasonal waterfall and swimming hole in the Ouachita Mountains.

A short boardwalk through a swamp leads to the spot from which the Louisiana Purchase was surveyed.

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

A large stone map of Arkansas awaits visitors to its highest point.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This historic bridge has weathered fires and floods and still stands, now abandoned, where it has stood since 1874.

This century-old roadside attraction is full of bizarre rock formations.

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

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.

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

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

The largest riverfront opening cave in the Ozarks.

Around 50 million gallons of water flow from this spring every day.

The longest of the four remaining covered bridges in Missouri.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

Often referred to as the largest spring in America.

The deepest spring in Missouri.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.