Stairs often replace streets on the steep slopes of this old mining town.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

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

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.

An urban laboratory.

The world's largest military aircraft cemetery.

Miniature art that tells an enormous story.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Limestone caves with spectacular showcase chambers.

Ancient pueblos built into the base of a natural canyon wall.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

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

This historic national park is covered in the stunning ruins of red rock pueblos.

A reproduction of earth's many biomes.

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

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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