The unusual burial monument of Arizona's first governor.

A self-built castle made by a mysterious man.

This abandoned horse racing track was an exercise in hubris from its inception.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

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

Steep canyon walls hide a forested oasis in the West Texas desert.

An abandoned movie set in the desert of West Texas.

A Prada store in the West Texas desert that is never open for business.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Legend says train robbers stashed their gold within the depths of this unusual cave.

America's only nuclear missile silo open to the public.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

Collection of vintage trailers double as hotel rooms.