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

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

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

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

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

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

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

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

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

Legend says train robbers stashed their gold within the depths of this unusual cave.

A geological mystery on Camelback Mountain.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

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.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

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

Founded by members of the Tohono O’odham Nation, this one-room joint's James Beard–winning fry bread is light as a cloud.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

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

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

The world's largest military aircraft cemetery.

Limestone caves with spectacular showcase chambers.