• Tucson
  • Tibetan Autonomous Prefecture of Haibei

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.

Haibei Tibetan Autonomous Prefecture, under the jurisdiction of Qinghai Province, is located in the northeast of the Qinghai-Tibet Plateau and on the western edge of the Loess Plateau. It has a total area of 34389.89 square kilometers and has jurisdiction over three counties and one autonomous county. In 2017, it has a resident population of 283000. There are 36 sites in Haibei Tibetan Autonomous Prefecture which have been announced by the people's Government of Qinghai Province. Among them, the national cultural relics protection units are Xihai County Zhilongyi City in the Western Han Dynasty; there are 11 cultural relics protection units at the provincial level; more than 40 tombs have been cleared and more than 700 cultural relics have been unearthed. This is also the place where Mr. Wang Luobin collected the style when he wrote the famous song "in that distant place". In 2017, the gross domestic product of Haibei Tibetan Autonomous Prefecture was 8.291 billion yuan, down 20.3% from the previous year at comparable prices.
Travel Sights In Tibetan Autonomous Prefecture of Haibei
Travel Notes In Tibetan Autonomous Prefecture of Haibei
Travel Asks In Tibetan Autonomous Prefecture of Haibei