Rita Ranch

The Esmond Train Wreck on January 28, 1903, 3:30 am, about 9 miles (14 km) east of present-day Tucson, Arizona, killed 14 people, including the engineers of both trains. The accident occurred when the eastbound Crescent City Express (No. 8) collided head-on with the westbound Pacific Coast Express (No. 7). Both trains were running late. A communication error was determined to be the cause of the wreck. A night operator named Clough admitted that he did not deliver a second order to Conductor Parker which instructed him to pull the Crescent City Express (No. 8), headed for New Orleans, on to the Esmond siding to allow the Pacific Coast Express (No. 7), headed for San Francisco, to pass by.

Mica Mountain High School is a high school in Tucson, Arizona, the fourth public high school operated by the Vail Unified School District.

Empire High School, also known as EHS, is a public high school in the Vail Unified School District in Tucson, Arizona. It is the first public high school in the United States to use all-wireless laptop technology and fully digital (no textbooks) curriculum resources.

The Vail Academy and High School is a school located in the University of Arizona Science and Technology Park. It was founded in 1997 to accommodate the fast-growing community surrounding Vail. It previously served just high school students, but since then, it has become a K-12 school. The school mascot is the Boxer. Students must complete a senior exit project in order to graduate, as this is a requirement in the Vail Unified School District.

The University of Arizona CPV Array is a 2.38 MWp (2.0 MWAC) concentrator photovoltaics (CPV) power station in Tucson, Arizona. It consists of 34 Amonix 7700 systems constructed in the Solar Zone of the University of Arizona's Science and Technology Park (UASTP). It uses all three of the methods available to increase efficiency: dual-axis tracking, Fresnel lens sunlight concentrators, and multi-junction cells. The annual electricity production is expected to be about 3.5 GW·h, and is being sold to Tucson Electric Power (TEP) under a 20-year power purchase agreement (PPA).

Rankin is a populated place situated in Pima County, Arizona, United States, located approximately 10 miles east of Tucson. A former station on the Southern Pacific Railroad, the origin of the name is unknown. It has an estimated elevation of 2,785 feet (849 m) above sea level.

Saguaro National Park is an American national park in Pima County, southeastern Arizona. The 92,000-acre (37,000 ha) park consists of two separate areas—the Tucson Mountain District (TMD) about 10 miles (16 km) west of the city of Tucson and the Rincon Mountain District (RMD) about 10 miles (16 km) east of the city—that preserve Sonoran Desert landscapes, fauna, and flora, including the giant saguaro cactus. The volcanic rocks on the surface of the Tucson Mountain District differ greatly from the surface rocks of the Rincon Mountain District; over the past 30 million years, crustal stretching displaced rocks from beneath the Tucson Mountains of the Tucson Mountain District to form the Rincon Mountains of the Rincon Mountain District. Uplifted, domed, and eroded, the Rincon Mountains are significantly higher and wetter than the Tucson Mountains. The Rincons, as one of the Madrean Sky Islands between the southern Rocky Mountains and the Sierra Madre Oriental in Mexico, support high biodiversity and are home to many plants and animals that do not live in the Tucson Mountain District. Earlier residents of and visitors to the lands in and around the park before its creation included the Hohokam, Sobaipuri, Tohono O'odham, Apaches, Spanish explorers, missionaries, miners, homesteaders, and ranchers. In 1933, President Herbert Hoover used the power of the Antiquities Act to establish the original park, Saguaro National Monument, in the Rincon Mountains. In 1961, President John F. Kennedy added the Tucson Mountain District to the monument and renamed the original tract the Rincon Mountain District. Congress combined the Tucson Mountain District and the Rincon Mountain District to form the national park in 1994. Popular activities in the park include hiking on its 165 miles (266 km) of trails and sightseeing along paved roads near its two visitor centers. Both districts allow bicycling and horseback riding on selected roads and trails. The Rincon Mountain District offers limited wilderness camping, but there is no overnight camping in the Tucson Mountain District.

The Convair XC-99, AF Ser. No. 43-52436, was a prototype heavy cargo aircraft built by Convair for the United States Air Force. It was the largest piston-engined land-based transport aircraft ever built, and was developed from the Convair B-36 Peacemaker bomber, sharing the wings and some other structures with it. The first flight was on 24 November 1947 in San Diego, California, and after testing it was delivered to the Air Force on 26 May 1949. The Convair Model 37 was a planned civil passenger variant based on the XC-99 but was not built.

Cienega High School (also known as CHS) is a public high school in Pima County, Arizona. It opened in the fall of 2001 with approximately 400 students (freshmen and sophomores). It is a member of the Arizona Interscholastic Association's 5A Conference.Cienega is currently the largest school in the Vail Unified School District in terms of student enrollment.

Santa Rita High School is located in Groves Lincoln Park, Tucson, Arizona. The school was established in 1969. It was named after the Santa Rita Mountains, one of the mountain ranges surrounding the Tucson valley. The campus has three main two-story classroom buildings where most classes are held. The school educates about 950 students from grades 9 to 12. Graduating classes usually consist of 300 students. In the 1984–85 school year, it was honored as a Blue Ribbon school.

The Boeing YAL-1 Airborne Laser Testbed (formerly Airborne Laser) weapons system was a megawatt-class chemical oxygen iodine laser (COIL) mounted inside a modified military Boeing 747-400F. It was primarily designed as a missile defense system to destroy tactical ballistic missiles (TBMs) while in boost phase. The aircraft was designated YAL-1A in 2004 by the U.S. Department of Defense.The YAL-1 with a low-power laser was test-fired in flight at an airborne target in 2007. A high-energy laser was used to intercept a test target in January 2010, and the following month, successfully destroyed two test missiles. Funding for the program was cut in 2010 and the program was canceled in December 2011. It made its final flight on February 14, 2012, to Davis–Monthan Air Force Base in Tucson, Arizona, to be kept in storage at the "Boneyard" by the 309th Aerospace Maintenance and Regeneration Group. It was ultimately scrapped in September 2014 after all usable parts were removed.

Tucson Speedway is a 0.375 mi (604 m) paved oval racetrack located at the Pima County Fairgrounds, off Interstate 10 just south of Tucson, Arizona. It is one of only three paved ovals in the state of Arizona (the others are Phoenix Raceway and Havasu 95 Speedway).