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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

An off-the-beaten path cave with an underground lake.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

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

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

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

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

This Old West prison built into the side of a cliff was said to be inescapable.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

The eroded core of an ancient volcano is now accessible by a short hike.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

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

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.