• Tucson
  • Zhouqu 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.

Zhouqu County, which belongs to Gannan Tibetan Autonomous Prefecture in Gansu Province, is located in the south of Gansu Province and in the southeast of Gannan Tibetan Autonomous Prefecture. Zhouqu means "Longjiang" in Tibetan and gets its name from the Bailong River passing through the county. Zhouqu system began in the pre-Qin period. In the 28th year of Qin Zhaowang (279 BC), Qiangdao County was located in the northwest of Zhouqu, Xigu County was set up after liberation, Zhouqu County was renamed Longdi County in 1959, and Zhouqu County was restored in 1962. By 2016, Zhouqu County had jurisdiction over 4 towns, 15 townships, 208 administrative villages and 403 natural villages, with a total population of 142000, of which 50400 were Tibetans, accounting for 35.8%. Zhouqu County is located in the Min, Dieshan system of the West Qinling Mountains and the edge of the Qinghai-Tibet Plateau, which is a typical alpine canyon landform. "one river and two rivers (Bailong River and Gongba River)
Travel Guides In Zhouqu County
Travel Notes In Zhouqu County
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Travel Asks In Zhouqu County