More than 21,000 images fill this overlooked gem of a prehistoric site.

This is one really big nut.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A museum dedicated to the alleged Roswell Incident.

Come for the speed, leave in love with the desert.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

A sculpture for the sun and stars, created by Nancy Holt.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

An experimental, automotive replica of Stonehenge.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

What do a giraffe, an elephant, and reasonably priced steaks have in common? This roadside restaurant filled with exotic taxidermy.

America's largest man-made forest was planted in an effort to bring back the past.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

A fake mine that was made using real mining techniques which is also used as a community center.

This erect, phallic geological spire wasn't always named so domestically.