A reproduction of earth's many biomes.

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

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

The world's largest military aircraft cemetery.

Visitors to this public park will also find the ruins of an old western fort.

A natural history wunderkammer in the middle of the desert.

One of the largest private collections of cars manufactured by the short-lived Franklin Automobile Company.

This bomb shelter-themed bar has barely changed since it opened.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

This church on a Tohono O'Odham reservation has stood since 1797.

Make a wish at what might be America's only Catholic shrine to a sinner.

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

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.

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

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

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

The sprawling attraction boasts a collection of more than 150 historic wagons.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

The fading, forgotten remains of a once bright and booming factory.