If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

Deadly airliner crash preserved for those willing to climb and pay respects.

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

A clear blue swimming hole with hidden caves, still unexplored.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

This sparsely populated town offers a look back in time.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The remains of a historic ranch house that witnessed the Civil War battle dubbed the “Gettysburg of the West.”

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A unique geological area spiked with wind-carved rocks that resemble teepees.

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

The building stands within a quiet, postcard-perfect New Mexico village.

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

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

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

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

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

A fake mine that was made using real mining techniques which is also used as a community center.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The highest bridge in America was built for an almost unnervingly small amount of money.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The largest self-built castle in the U.S., six decades in the making.

A mental health hospital dating back more than 139 years, now features a museum.