The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This super-sized statue is the only public memorial to the deal that ended America's neutrality during World War II.

The first declared National Monument in the United States.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

Improbably, the largest wildlife refuge in the conterminous 48 states sits just northwest of Las Vegas, Nevada.

A cosmic pit stop just beyond the notorious Area 51.

This enormous fiberglass cow near Death Valley National Park once graced a casino roof in Las Vegas.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Marta Becket's hand-painted theater in the desert.

A bizarre example of collective behavior resulted in thousands of shoe prints in Vegas parking lots.

An enormous illuminated figure dances on the Las Vegas strip.

Experience a charming 1930s version of "infotainment."

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

These markers are used to document elevation changes around the famed dam.

A quirky roadside sign was the subject of a years-long legal standoff over highway right-of-way clearances. 

This whimsical stacked cabin looks like something out of a children's book.

Pay homage to the "Top Woman Athlete of the Twentieth Century."

This decommissioned DC-3 now forever points into the oncoming wind.

Historic site where Native American hunters once trapped and killed buffalo.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

These giant metal horses graze on a hilltop near the Montana highway.