The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

The kind of mixed-up place that drives archaeologists crazy.

The intriguing personal collection of a professional demon-chaser.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

The eroded core of an ancient volcano is now accessible by a short hike.

You can dig up your own crystals in the quartz capital of the world.

People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

These waterfalls can be twins or triplets, depending on how much it's rained recently.

The seventh largest spring in the world.

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

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

The legend of a local monster still haunts this small town.

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

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

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.

These free-roaming horses were once destined to disappear from the land.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

What is the Thing?

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.