The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

A stone pillar commemorates the surrender of the extraordinary Apache leader.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

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

Stairs often replace streets on the steep slopes of this old mining town.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

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

Collection of vintage trailers double as hotel rooms.

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

This historic national park is covered in the stunning ruins of red rock pueblos.

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.