Ancient pueblos built into the base of a natural canyon wall.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

The Grand Canyon of Texas.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

The remains of a boarding school designed to forcibly assimilate Native American children.

In 1967, murder and mayhem disrupted the tranquility along this quiet stretch of Old Route 66.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

Everything you always wanted to know about borates is here.

Where NASA's satellites and rovers phone home.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Etched into a dry lake bed, this massive directional indicator is accurate without magnets.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

These colossal desert barcodes have been fine-tuning spy satellites for decades.

A dry lake is what remains of a community founded on a real estate scam.

The "Kill Bill Church" was transformed into a place of worship after a long Hollywood history.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The smallest Mexican land grant in California was given, and then taken from, a 19th-century teacher and nurse.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.