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

Limestone caves with spectacular showcase chambers.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

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

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

What is the Thing?

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

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

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

The biggest solar telescope in the world helps reveal the secrets of our sun.

The remnants of a creative early method of wildfire prevention.

This Native American settlement dates back to the Pueblo II period.

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

One of the largest open-pit copper mining operations in the entire country.

Legend says train robbers stashed their gold within the depths of this unusual cave.

Explore a misty river canyon from a metal bridge system.

This abandoned bootleg attraction was built to cash in on the popularity of classic TV show, F Troop.

The Grand Canyon’s original airport, which once welcomed pilots like Amelia Earhart and Charles Lindbergh, lies abandoned.

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

This church on a Tohono O'Odham reservation has stood since 1797.

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.