The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

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

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

Stairs often replace streets on the steep slopes of this old mining town.

A cabinet of curious mathematical models and old calculators.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

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

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

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

Once a year, at exactly 11:11 a.m., this monument comes to life.

The biggest solar telescope in the world helps reveal the secrets of our sun.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

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

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

This small, unassuming street is now a canvas for color and creativity.

For those going through a life transition, a place to leave behind a piece of your former self.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

The shop's owner has spent decades in the desert wearing nothing but a strategically placed sock.

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

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A geological mystery on Camelback Mountain.