One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

One man's quest to save his town with a trail of record-breaking sculptures.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

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.

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

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

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

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

A small Wyoming town is home to the state's oldest-operating soda fountain.

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

A monument to the egos of two railroad magnates that fell into decline along with their careers.

Miraculous tree that seems to sprout out of solid rock.

One of the smallest towns in the United States.

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

A house carved into a rock in the 1940s.

Oddly shaped rock formation, misassociated with a nearby utopian community.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Legends surround this jagged rock formation in the New Mexico desert.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.