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

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

What is the Thing?

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

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

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.

Miniature art that tells an enormous story.

The Magical World of George Phar Legler.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

The cinder cone volcano with a less than complimentary name.

A reproduction of earth's many biomes.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

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

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A motel dedicated to Southwestern nostalgia.

An artificial crater field that trained astronauts for lunar exploration.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A Wild West jailhouse that slid down the mountainside.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A spiritual vortex among the red rocks in Sedona.

A geological mystery on Camelback Mountain.

An urban laboratory.