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

One of the largest, oldest, darkest, quietest motel rooms in the world.

America's only nuclear missile silo open to the public.

A reproduction of earth's many biomes.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

One of the American Southwest's most extensive collections of Navajo rock art.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

This is one really big nut.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A unique geological area spiked with wind-carved rocks that resemble teepees.

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

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.