This house designed by Frank Lloyd and Louis Sullivan was destroyed twice and reconstructed to near original condition.

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

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

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

The location where the iconic movie character declared it was time to go home.

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

The graffiti-covered ruins of an abandoned trading post in the middle of Navajo Nation.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

More than a century old, this trading post resides in the Navajo Nation.

This remote desert watering hole has a connection to a curious chapter of American history.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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

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

Rippling sand dunes frozen in the Arizona rock.

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.

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

Many believe these images represent interstellar lifeforms.

One of the few remaining indigenous petroglyph sites in Nevada.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

This sign designates the road that leads to the infamous Area 51.

Back in the day everyone who was anyone played this historic western theater.

This dry lake bed contains the oldest known petroglyphs in North America.