One of the largest open-pit copper mining operations in the entire country.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

The remnants of a creative early method of wildfire prevention.

This bomb shelter-themed bar has barely changed since it opened.

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

An amazing collection of model trains, collectibles, and artifacts that span the last 100 years.

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.

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

Inside this store, a mysterious statue draws visitors from the world over.

One of the largest private collections of cars manufactured by the short-lived Franklin Automobile Company.

This ancient trail has claimed the lives of over 2,000 people.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

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

This remote desert watering hole has a connection to a curious chapter of American history.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

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

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

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.