A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The highest peak in Utah is the hardest to reach, but only if explorers choose the hard way.

Visitors to this library are in for a real-world education in modernist architecture.

Despite its name, this route in southern Utah offers a heavenly day trip.

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

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

This geothermal hot spring hides beneath a slowly growing mineral dome.

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A multi-storied adobe complex has been inhabited for more than a thousand years.

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

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Community owned and operated, this property is home to a diverse set of nudists.

A mysterious "wedding cake" castle in the middle of the urban desert.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

The unbelievably opulent home built for an infamous newspaperman.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.