Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Stock up on all your horror paraphernalia at this year-round Halloween emporium.

Two geoglyphs that are truly unique to North America.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

An open-air, roadside eatery celebrating a historic indigenous cuisine of complicated significance.

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

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

A tribute to the statues of Easter Island along Route 66.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

Petroglyphs, bird watching, and a 100-year-old Ranch in one location.

The stone-covered graves lie within the ruins of an Old West ghost town.

Make a wish at what might be America's only Catholic shrine to a sinner.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

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

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

This bomb shelter-themed bar has barely changed since it opened.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

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

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