The largest source of fossilized insects anywhere.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The largest self-built castle in the U.S., six decades in the making.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A serene temple with stunning stained glass hides in downtown Dallas.

This downtown Dallas art installation is always on the lookout.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A rare wayfinding portmanteau of “Street” and “Avenue.”

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

The first permanent memorial to a unique secret weapon of World War II.

This collection of neon icons is preserving Arizona's history, one sign at a time.

These free-roaming horses were once destined to disappear from the land.

This sanguine boulevard was named after a deadly cowboy bar fight.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Despite a recent paint job, the factory still sits empty.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

What is the Thing?

This striking public art installation is suspended above a public park, designed to gently move in the breeze.