The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

Most-visited and most-photographed slot canyon in the American Southwest.

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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

A mistaken marker makes an erroneous claim along the historic Old Divide Road.

This curiosity shop contains a museum filled with bizarre, unique objects.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

What is the Thing?

The world's largest military aircraft cemetery.

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

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

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

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

A reproduction of earth's many biomes.