This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An enormous, inside-out glass globe built in 1935.

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

A rare wayfinding portmanteau of “Street” and “Avenue.”

These free-roaming horses were once destined to disappear from the land.

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 Wild West jailhouse that slid down the mountainside.

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

The remains of this hell for leather wild west town can still be found in the Arizona desert.

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

This giant steer-skull edifice refuses to die.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Collection of vintage trailers double as hotel rooms.

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

Limestone caves with spectacular showcase chambers.

A spiritual vortex among the red rocks in Sedona.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

The Magical World of George Phar Legler.

A stealthy Apache hideaway that became the haunting site of a mass grave.