The Gunfight at the O.K. Corral was a 30-second shootout between lawmen and members of a loosely organized group of outlaws called the Cowboys that took place at about 3:00 p.m. on Wednesday, October 26, 1881, in Tombstone, Arizona. It is generally regarded as the most famous shootout in the history of the American Wild West.

First discovered in 1905, the Arizona ridge-nosed rattlesnake (Crotalus willardi) lives only the Huachuca, Patagonia, and Santa Rita Mountains in the south central part of Arizona.

The state of Arizona has not observed Daylight Saving Time since 1967. This is in large part intended to conserve energy. Phoenix and Tucson are among the hottest U.S. metropolitan areas during the summer, resulting in more power usage from air conditioning units and evaporative coolers in homes and businesses. An extra hour of sunlight while people are active would cause people to run their cooling systems longer, thereby using more energy.

The Painted Desert was named by an expedition under Francisco Vázquez de Coronado on his 1540 quest to find the Seven Cities of Cibola, which he located some 40 miles (60 km) east of Petrified Forest National Park. Finding the cities were not made of gold, Coronado sent an expedition to find the Colorado River to resupply him. Passing through the wonderland of colors, his expedition named the area El Desierto Pintado ("The Painted Desert").

Phoenix was settled in 1867 as an agricultural community near the confluence of the Salt and Gila Rivers. It became the capital of Arizona Territory in 1889 and is the largest state capital by population.

A saguaro known as "Old Granddaddy" survived in Saguaro National Park for about 300 years, twice as long as the average saguaro lives. Not only was "Old Granddaddy" old, he was also a giant, standing over 40 feet tall, with 52 arms just before he died in 1993.

Each winter, about half a million "snowbirds" temporarily migrate to Arizona for the sunny climate and magnificent desert scenery.

No physical evidence of Camp Papago Park remains today in what is now a residential section of Scottsdale, near the Cross-cut Canal. But during World War II, about 375 Americans guarded more than 4,000 German prisoners. In December 1944, twenty-five POWs escaped into the surrounding desert after digging a 176-foot-long tunnel without being detected. Though the camp proved easy enough to escape, the vast distances and desert terrain were insurmountable, and most of the prisoners returned to the camp within a few weeks.

About 12 people die inside the park each year, although many of the deaths are caused by heat or natural causes, rather than falls.

A kachina is a spirit being in the religious beliefs of the Pueblo peoples, and kachina dolls are ceremonial objects used to teach children of the tribe about the spirit world. Although there are many large Kachina dolls sprinkled through the Southwest, the largest is a 39-foot statue located in Carefree, Arizona, in a residential community known as Tonto Hills.