The two-cell building in Nebraska was briefly owned by a teenage boy and then a Hollywood dummy.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

These aggressively sustainable art homes look like something out of 1970's science fiction.

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

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

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

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

Home to the deepest rift anywhere on Earth.

This playground sculpture of an icon from the past is dedicated to the children of the future.

A wild west land agreement was etched right onto this historic Idaho stone.

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

The first spinning jail built in the United States is the only one that still turns.

The largest earthwork effigy in the world.

A suspended garden, now gone, once hung in the middle of this abandoned church.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

A castle built by an eccentric medieval enthusiast in rural Ohio.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

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

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.