This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

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

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

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

A unique collection of artistic rides

A lovely park home with a few interesting guests.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

More than a century old, this trading post resides in the Navajo Nation.

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

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

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

This memorial includes fragments from one of the greatest tragedies in United States history.

This roadside stop between Goblin Valley is the perfect location to view some of the region's natural wonders.

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

A replica of the flagpole that gave a frontier town its name.

Inside this store, a mysterious statue draws visitors from the world over.

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

The largest and most well-preserved petroglyph site in the Verde Valley.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

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

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.