A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

A monument commemorating how a frontier town got its unusual name.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A mysterious spirit totem at the edge of Navajo lands.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

One of the largest, oldest, darkest, quietest motel rooms in the world.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

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

A spiritual vortex among the red rocks in Sedona.

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

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

An ambitious developer built what was once the world's tallest fountain in a Phoenix suburb.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

A mysterious "wedding cake" castle in the middle of the urban desert.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.