A tree bears footwear on the loneliest road in America.

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

This rest area is also home to a remarkable petroglyph site.

A Nevada mining boomtown that ran out of silver and luck.

One of the best-preserved early 20th-century ore-processing mills in Nevada is maintained in a state of arrested decay.

Only ruined buildings and abandoned charcoal kilns remain of this once bustling Wild West boom town.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

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

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

The world's first motel is now an administrative building for an apple farm.

Noble beasts perhaps, but not the Emperor's dogs.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

Nature has shaped this drainage tunnel into the digestive tract of a mighty beast.

A museum has some wedding cake dating to the Teddy Roosevelt administration, and some bacon from FDR's.

The drama of nature in full effect in this Nevada State Park.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

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

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

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.

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

One of the few slot canyons in New Mexico, this area is fantastic for hiking, camping, and stargazing.

Once a mining boom town, Mogollon’s well-preserved buildings are tucked away in the mountains of the Gila National Forest.

This small canyon park was once the main street of Silver City—until a flood washed it away.