In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

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

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

A house carved into a rock in the 1940s.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

A ghost town that held steady longer than most, but finally gave up the ghost.

This former rail stop in Utah was abandoned, repopulated by some nostalgic friends, and now is home to a single DIY aviator who lives in a hangar.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

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

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

A small flooded ghost town with a few scattered structures remaining.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

The largest island on the great salt lake is home to curious creatures and strange stories.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Largest man-made excavation on earth!