Collection of vintage trailers double as hotel rooms.

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

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

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

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Limestone caves with spectacular showcase chambers.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

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

The Magical World of George Phar Legler.

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

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

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

A reproduction of earth's many biomes.

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

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

A self-built castle made by a mysterious man.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

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.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

Rippling sand dunes frozen in the Arizona rock.