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

The cinder cone volcano with a less than complimentary name.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

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

A mysterious spirit totem at the edge of Navajo lands.

An artificial crater field that trained astronauts for lunar exploration.

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

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

Ancient pueblos built into the base of a natural canyon wall.

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

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

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

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

An inconspicuous footbridge beloved by San Diego locals.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

An original apothecary from 1792.