Oldest building in California still in use.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

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

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

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

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

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

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

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

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

What is the Thing?

The world's largest military aircraft cemetery.

A spiritual vortex among the red rocks in Sedona.

America's only nuclear missile silo open to the public.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

A reproduction of earth's many biomes.

Roadside collection of 65,000 signs.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

This public park was the site of the largest civilian disaster of the Civil War.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.