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Raleigh (/ˈrɑːli/; RAH-lee) is the capital city of the state of North Carolina and the seat of Wake County in the United States. It is the second-most populous city in North Carolina, after Charlotte. Raleigh is the tenth-most populous city in the Southeast, the 41st-most populous city in the U.S., and the largest city of the Research Triangle metro area. Raleigh is known as the "City of Oaks" for its many oak trees, which line the streets in the heart of the city. The city covers a land area of 147.6 sq mi (382 km2). The U.S. Census Bureau counted the city's population as 474,069 in the 2020 census. It is one of the fastest-growing cities in the United States. The city of Raleigh is named after Sir Walter Raleigh, who established the lost Roanoke Colony in present-day Dare County.

Raleigh is home to North Carolina State University (NC State) and is part of the Research Triangle together with Durham (home of Duke University and North Carolina Central University) and Chapel Hill (home of the University of North Carolina at Chapel Hill). The name of the Research Triangle (often shortened to the "Triangle") originated after the 1959 creation of Research Triangle Park (RTP), located in Durham and Wake counties, among the three cities and universities. The Triangle encompasses the U.S. Census Bureau's Raleigh-Durham-Cary Combined Statistical Area (CSA), which had an estimated population of 2,037,430 in 2013. The Raleigh Metropolitan Statistical Area had an estimated population of 1,390,785 in 2019.

Most of Raleigh is located within Wake County, with a small portion extending into Durham County. The towns of Cary, Morrisville, Garner, Clayton, Wake Forest, Apex, Holly Springs, Fuquay-Varina, Knightdale, Wendell, Zebulon, and Rolesville are some of Raleigh's primary nearby suburbs and satellite towns.

Huairou District is a municipal district of Beijing, which is located at the southern foot of Yanshan and in the northeast of Beijing. It is bordered by Miyun District to the east, Shunyi District and Changping District to the south, Yanqing District to the west, and Chicheng County, Fengning County and Luanping County to the north. The city is 50 kilometers away from Dongzhimen, Beijing, with a total area of 2123 square kilometers. The 2014 APEC meeting was held in Yanqi Lake, Huairou District. National health city (district). There are 17 rivers and 16 large, small and medium-sized reservoirs in the area. Five villages and towns in the north are the main water source of Miyun Reservoir. As of 2013, the region's resident population was 382000, and the urban population was 262000 of the permanent resident population, accounting for 68.6% of the resident population.
Airport In Huairou District - Beijing Capital International Airport
Beijing Capital International Airport (Beijing Capital International Airport, IATA: PEK, ICAO: ZBAA), located in the northeast suburb of Beijing, China, 25 kilometers southwest of Beijing city center, 67 kilometers south of Beijing Daxing International Airport, is a 4F international airport   , is one of the three major portal complex hubs in China   , members of the international air cargo hub group in the Bohai Rim region   , the world's largest airport   .
Beijing Capital International Airport was built in 1958. On January 1, 1980, supporting projects such as the T1 terminal building, the apron, and the parking lot in front of the building were completed and officially put into use. On November 1, 1999, the T2 terminal was officially put into use, and at the same time, the T1 terminal was closed for renovation. On September 20, 2004, the T1 terminal was put into use again. In the spring of 2008, the airport expansion project (Terminal T3) was completed.  
As of July 2017, Beijing Capital International Airport has three terminal buildings with a total area of ​​1.41 million square meters; there are two 4F runways and one 4E runway   The length and width are 3800×60 meters, 3200×50 meters, 3800 meters×60 meters respectively; there are 314 seats in total; 252 domestic and foreign routes have been opened.    
From 1978 to 2018, the annual passenger throughput of Beijing Capital International Airport increased from 1.03 million to 101 million, ranking first in Asia and second in the world.   In 2019, the passenger throughput of Beijing Capital International Airport was 100.013 million passengers, a year-on-year decrease of 1.0%; the cargo and mail throughput was 1.9553 million tons, a year-on-year decrease of 5.7%; , No. 2, No. 1.  
In 2021, Capital Airport will add three new domestic destinations, namely Huai'an, Tumusuk and Jingzhou   .
Travel Guides In Huairou District
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Travel Asks In Huairou District