Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

More than a century old, this trading post resides in the Navajo Nation.

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

The cinder cone volcano with a less than complimentary name.

The eroded core of an ancient volcano is now accessible by a short hike.

This Native American settlement dates back to the Pueblo II period.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

This tucked-away cemetery is the final resting place of a prospector who uncovered one of the largest gold mines in Arizona.

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

The remnants of a creative early method of wildfire prevention.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

A former utopian healing center created by a huckster and built by derelicts.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

One of the ghostly stops along Route 66.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ghost town that ended up on Ebay.