The largest and most well-preserved petroglyph site in the Verde Valley.

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

A spiritual vortex among the red rocks in Sedona.

A natural history wunderkammer in the middle of the desert.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

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

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This historic national park is covered in the stunning ruins of red rock pueblos.

Rippling sand dunes frozen in the Arizona rock.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

This is one really big nut.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A cave's rare beauty held a cavernous secret hidden underground.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."