• Tucson
  • Sanmenxia

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.

Sanmenxia, a prefecture-level city under the jurisdiction of Henan Province, is located in the south golden triangle of the Yellow River at the junction of Henan, Shanxi and Shaanxi provinces. the landform is mainly mountains, hills and loess plateaus, belonging to a warm temperate continental monsoon semi-arid climate, with a total area of 10496 square kilometers. it has jurisdiction over 2 districts, 2 counties and 2 county-level cities, with a total population of 2.308 million in 2018. Sanmenxia is known as "five mountains, four ridges and one division of Sichuan", with Guanzhong in the west, Sanjin in the north and the Central Plains in the east. Longhai Railway, Lianhuo Expressway, National Highway 310, Zheng (Zhou) West ('an) High-speed Railway running from east to west, 209 National Highway, San (Menxia) Li (Sichuan) Expressway and Haoji Railway connect the north and south. It is a regional transportation hub city that connects Henan, Shanxi and Shaanxi provinces, north to south, west to east. At the same time, Yangshao culture, Taoist culture and Guo culture are all
Travel Guides In Sanmenxia
Travel Sights In Sanmenxia
Travel Notes In Sanmenxia
Travel Asks In Sanmenxia
Travel Asks In Sanmenxia