What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

It took years to decode its mysterious messages.

This lonely gas station has stood at this location since 1917.

A replica that won't float away.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

A Wild West jailhouse that slid down the mountainside.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

A stealthy Apache hideaway that became the haunting site of a mass grave.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

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

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

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

Ancient pueblos built into the base of a natural canyon wall.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

An architect's childhood fantasy treehouse made real.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

A tunnel with windows, so you don't miss out on the impressive views.

For roadside fast food, pull over at the giant orange.