If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A clear blue swimming hole with hidden caves, still unexplored.

Recycling meets art in this colorful barricade.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

A museum and tribute to a brave profession.

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

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

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

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

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

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

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

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

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

Rippling sand dunes frozen in the Arizona rock.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

This quiet park's strange sedimentary spires were named after Kodak's color film.