• Tucson
  • Ganquan County

Tucson (/ˈtuːsɒn, tuːˈsɒn/; Spanish: Tucson, O'odham: Cuk-Ṣon) is a city in and the county seat of Pima County, Arizona, United States, and is home to the University of Arizona. It is the second largest city in Arizona behind Phoenix, with a population of 542,629 in the 2020 United States census, while the population of the entire Tucson metropolitan statistical area (MSA) is 1,043,433. The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA). Both Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles (174 km) southeast of Phoenix and 60 mi (97 km) north of the U.S.–Mexico border. Tucson is the 34th largest city and the 53rd largest metropolitan area in the United States (2014).

Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson (some within or overlapping the city limits) include Casas Adobes, Catalina Foothills, Flowing Wells, Midvale Park, Tanque Verde, Tortolita, and Vail. Towns outside the Tucson metro area include Benson to the southeast, Catalina and Oracle to the north, and Green Valley to the south.

Tucson was founded as a military fort by the Spanish when Hugo O'Conor authorized the construction of Presidio San Agustín del Tucsón in 1775. It was included in the state of Sonora after Mexico gained independence from the Spanish Empire in 1821. In 1853, the United States acquired a 29,670 square miles (76,840 km2) region of present-day southern Arizona and southwestern New Mexico from Mexico under the Gadsden Purchase. Tucson served as the capital of the Arizona Territory from 1867 to 1877. Tucson was Arizona's largest city by population during the territorial period and early statehood, until it was surpassed by Phoenix by 1920. Nevertheless, population growth remained strong during the late 20th century. In 2017, Tucson was the first American city to be designated a "City of Gastronomy" by UNESCO.

Ganquan County belongs to the hilly and gully zone of the Loess Plateau in northern Shaanxi Province, which is located in the middle of Yan'an City, Shaanxi Province, with a semi-humid inland monsoon climate. The total area is 2284.7 square kilometers, the total area of cultivated land in the county is 609000 mu, and the forest and grass coverage rate is 78.4%, of which the forest coverage rate is 50.5%. Ganquan gets its name because of the spring water in the foothills of Shenlin, 5 kilometers southwest of the city, which is known as "the hometown of beautiful water". There is a history of the Western Zhou Dynasty, Qin home Diaoyin County, Northern Wei early home Linzhen County, Tang Wude first year home Fulu County, Tianbao first year changed to Ganquan County. Places of interest include the site of Qin Zhidao, the "Meishui Spring" given by Emperor Yang of the Sui Dynasty, the White Deer Temple built in the Tang Dynasty, the Millennium Ginkgo Tree, the ancient tombs of the Song Dynasty, and so on. In March 2019, it was listed as the first batch of revolutionary cultural relics protection and utilization district and county list.
Travel Guides In Ganquan County
Travel Notes In Ganquan County