A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

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

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

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

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

A spiritual vortex among the red rocks in Sedona.

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

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

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

This small, unassuming street is now a canvas for color and creativity.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

The first permanent memorial to a unique secret weapon of World War II.

The unusual burial monument of Arizona's first governor.

Once a year, at exactly 11:11 a.m., this monument comes to life.

A geological mystery on Camelback Mountain.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

A mysterious "wedding cake" castle in the middle of the urban desert.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A self-built castle made by a mysterious man.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

Some of Arizona's best spit-roasted tacos al pastor can be found at a weekend swap meet.

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

Legend says train robbers stashed their gold within the depths of this unusual cave.