The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Just a man taking his prehistoric pet for a stroll.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The same security that protects our nukes accidentally protected a gentle herd of antelope.

At the time of its completion, it was the tallest dam in the world.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

This Wyoming town is fascinated by a particular mythical creature.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

No Gordon Lightfoot song, only a barebones monument to greed.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Miraculous tree that seems to sprout out of solid rock.

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

A miraculous natural phenomenon known as "the spring that breathes."

An architect's childhood fantasy treehouse made real.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.