An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

The sprawling attraction boasts a collection of more than 150 historic wagons.

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

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

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

The graffiti-covered ruins of an abandoned trading post in the middle of Navajo Nation.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

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

This comprehensive collection features Native American artifacts dating back centuries.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

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

Make a wish at what might be America's only Catholic shrine to a sinner.

Giant telescope mirrors built in a spinning furnace under a college football stadium.

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

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

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

The stone-covered graves lie within the ruins of an Old West ghost town.

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.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

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

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