A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

It was once used as a classroom to teach mining skills to local high school students.

The mayor made the declaration in 2004.

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

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

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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

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

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

A cemetery housing wild west legends in South Dakota.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

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

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

An ADA-accessible trail and deck offering stunning views of Colorado’s Mount of the Holy Cross.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

Even in death, he's still your huckleberry.

A coal fire has been burning underground here since 1896.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

This interpretive path lets you get up close and personal with dinosaur bones.

These giant metal horses graze on a hilltop near the Montana highway.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

This tiny movie theater was the last one in the U.S. constructed in the Nuevo Deco architectural style.