Palominas, Arizona

Hereford Army Airfield is an abandoned military airfield located about 2 miles (1.7 nmi; 3.2 km) west-southwest of Hereford, Arizona, United States.

The Hereford Bridge spans the San Pedro River near Hereford, Arizona, and was built in three stages. The first one was built in 1912–1913, consisting of a single span truss, with steel cylinder piers as supports. It as constructed by the Midland Bridge Company of Kansas City, Missouri for a cost of $3,112, and completed in March 1913. Two years later, Cochise County ordered a second span, as well as moving the original span approximately two-hundred feet upriver. The project was completed in 1915 by Bane and Tarrant, using a superstructure manufactured by Penn Bridge Company of Beaver Falls, Pennsylvania. The third and final stage was done in 1927, consisting of a third pony truss span. It was constructed by the Ware Company of El Paso, Texas, using a hundred-foot truss from the Virginia Bridge and Iron Company of Roanoke, Virginia. While the bridge is typical, the fact that it was constructed in stages is unusual. The span constructed in 1912 is one of the two earliest trusses used for transporting vehicles in Arizona.The bridge consists of three spans, with a 102-foot span length and an overall roadway length of 267 feet. The roadway width is 15.7 feet. It is constructed of riveted steel, with 10-panel Warren pony trusses, concrete abutments, concrete wingwalls, and concrete-filled steel cylinder piers. There is a concreted deck over steel stringers.

Kinjockity Ranch, also known as Lanteen Ranch, is a Pueblo Revival style residence in Cochise County, Arizona, originally built in 1939-1940 for Rufus Riddlesbarger, a wealthy Chicago businessman. It is a notable example of Pueblo Revival style, executed in adobe with richly detailed interiors and hand-made hardware. The house was designed by Edward C. Morgan, an architect from Phoenix who specialized in what he called "the Mexican style." The interiors were decorated and embellished by illustrator and sculptor Raymond Phillips Sanderson, who had collaborated with Morgan on previous commissions.

The Junk Bond Observatory (JBO; code: 701) is located in the Sonoran Desert at Sierra Vista, Arizona, United States. It was established by amateur astronomer David Healy in his backyard in 1996, using a Celestron 14 SCT and a 16-inch Meade LX200 telescopes in a roll-off shelter. In 2000, a 20" Ritchey-Chretien was installed, to be replaced by a 32" Ritchey in 2004. Asteroid searches began in 1998 using a local computer network and search software. The first discovery at the observatory was made by Jeff Medkeff in June 1999. It was named 38203 Sanner after Glen Sanner also a member of the Huachuca Astronomy Club.As of November 2016, a total of 272 numbered minor planets have been discovered at the observatory, using a 32-inch telescope. The Minor Planet Center credits 219 of these discoveries to David Healy and/or Jeff Medkeff. The discovery of the remaining 53 numbered minor planets is credited directly to the observatory (see list below).Until his death in 2011, David Healy was a frequent contributor of follow-up observations to objects on the Minor Planet Center's Near-Earth Object Confirmation Page, surveyed for asteroids netting approximately four new discoveries per month as of January 2007, performed discovery and confirmation photometry of extrasolar planet transits, and performed photometry of cataclysmic variable stars and active galactic nuclei. The telescope operated robotically, unattended for most of the night, controlled by software by Bob Denny and Jeff Medkeff. JBO was dismantled in August 2021. The telescope, dome, and other equipment were purchased by a private buyer.

Hereford Arizona Observatory (HAO), IAU-code G95, is an astronomical observatory, owned and operated by amateur astronomer Bruce L. Gary. Observational studies of unusual starlight fluctuations in Tabby's Star (KIC 8462852) and WD 1145+017 are recent interests. HAO consists of two telescopes, in two separate observatory installations: HAO#1 (contains a Celestron CPC 1100, 11-inch Schmidt-Cassegrain telescope on an equatorial mount) and HAO#2 (contains an Astro-Tech Ritchey–Chrétien, 16-inch telescope on an equatorial mount).The observatory is located in Arizona about 130 km (80 mi) southeast of Tucson and about 11 km (7 mi) north of the Mexican border. Coordinates are at the following: North Latitude +31:27:08 and West Longitude 110:14:16, at an altitude of 1,423 m (4,670 ft).

Nicksville is a populated place in Cochise County, Arizona, just north of the international border between the United States and Mexico. It has an estimated elevation of 4,816 feet (1,468 m) above sea level.

Coronado Cave (31°21′4″N 110°15′38″W) is located in Cochise County in southern Arizona near the Mexican border. Walking in the cave is rather easy and the temperature is consistent. Some rooms require crawling in order to enter. The cave has both stalactites and stalagmites. The cave has been measured to be approximately 600 feet long, 70 feet wide and 20 feet tall with several passages and crawl ways.

The Coronado National Memorial commemorates the first organized expedition into the Southwest by conquistador Francisco Vásquez de Coronado in 1540. The memorial is located in a natural setting on the Mexico–United States border on the southeast flank of the Huachuca Mountains south of Sierra Vista, Arizona and is bordered to the north and west by Coronado National Forest. Within the memorial is an overlook at Montezuma Pass where the Coronado expedition entered modern Arizona. The memorial confirms the ties that bind the United States and Mexico.

Sierra Vista Southeast, often referred to as Hereford or Nicksville, is a census-designated place (CDP) in Cochise County, Arizona, United States. The population was 14,797 at the 2010 census. It includes the neighborhoods Ramsey Canyon, and Sierra Vista Estates within its boundaries.

Sierra Summit Academy was a charter school in Hereford, Arizona, near the larger town of Sierra Vista. The school opened in 2001 and closed in August 2011 due to losing its lease.

Fort Naco, Camp Naco, or Fort Newell began as a camp in the Southwest United States, on the outskirts of Naco, Arizona as part of the Mexican Border Project. Over time adobe and wooden buildings were constructed to house the garrison along with other permanent structures.

Mount Ballard, with an elevation of 7,374 feet (2,248 m) is located in Cochise County, Arizona, about 1.8 miles (3 km) west of Bisbee.