Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

An off-the-beaten path cave with an underground lake.

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

A stone pillar commemorates the surrender of the extraordinary Apache leader.

A scrap-metal sculpture recalls an infamous 19th-century camel.

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

This comprehensive collection features Native American artifacts dating back centuries.

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

The graffiti-covered ruins of an abandoned trading post in the middle of Navajo Nation.

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.

The largest and most well-preserved petroglyph site in the Verde Valley.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

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

The stone-covered graves lie within the ruins of an Old West ghost town.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This remote desert watering hole has a connection to a curious chapter of American history.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

This ancient trail has claimed the lives of over 2,000 people.

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.