Eons ago, a rushing lava river formed this pristine passage through solid rock.

An homage to everyone's favorite prehistoric cartoon family.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This spectacular track has run continuously since 1882.

What is the Thing?

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

This curiosity shop contains a museum filled with bizarre, unique objects.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A geological mystery on Camelback Mountain.

A museum and tribute to a brave profession.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A sharp bend in a dramatic river canyon cut through red rocks.

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

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

An excursion train traverses a picturesque red-rock canyon along the Verde River.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

These markers are used to document elevation changes around the famed dam.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

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