Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

An off-the-beaten path cave with an underground lake.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

This ancient trail has claimed the lives of over 2,000 people.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

A former department store turned into a quirky restaurant.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

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

The eroded core of an ancient volcano is now accessible by a short hike.

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

A Wild West jailhouse that slid down the mountainside.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

A natural history wunderkammer in the middle of the desert.

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

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

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

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

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

Don't blink or you'll miss it.

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