Rippling sand dunes frozen in the Arizona rock.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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

This fully restored synagogue explores the American Jewish experience along the old frontier.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

"I did this all while you were watching TV."

A unique arch graces the Dolores River Canyon near the Hanging Flume.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

One of few remaining antique carousels with stationary animals in the U.S.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

Two creeks flow out of either end of this canyon in opposite directions.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

A research lab and hands-on museum where visitors can experiment with retro technology.

A recreation of an Old West apothecary full of curios.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

The largest self-built castle in the U.S., six decades in the making.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.