Beijing is a metropolis in northern China and the capital of the People's Republic of China. It is one of the four municipalities of the PRC, which are equivalent to provinces in China's administrative structure. The municipality of Beijing borders Hebei Province to the north, west, south, and for a small section in the east, and Tianjin Municipality to the southeast. Beijing is one of the Four Great Ancient Capitals of China.

Beijing is China's second largest city, after Shanghai. Beijing is a major transportation hub, with dozens of railways, roads and motorways passing through the city. It is also the focal point of many international flights to China. Beijing is recognised as the political, educational, and cultural center of the People's Republic of China, while Shanghai and Hong Kong predominate in economic fields. The city hosted the 2008 Olympic Games.

Beijing is situated at the northern tip of the roughly triangular North China Plain, which opens to the south and east of the city. Mountains to the north, northwest and west shield the city and northern China's agricultural heartland from the encroaching desert steppes. The northwestern part of the municipality, especially Yanqing County and Huairou District, are dominated by the Jundu Mountains, while the western part of the municipality is framed by the Xishan Mountains. The Great Wall of China, which stretches across the northern part of Beijing Municipality, made use of this rugged topography to defend against nomadic incursions from the steppes. Mount Dongling in the Xishan ranges and on the border with Hebei is the municipality's highest point, with an altitude of 2303 m. Major rivers flowing through the municipality include the Yongding River and the Chaobai River, part of the Hai River system, and flow in a southerly direction. Beijing is also the northern terminus of the Grand Canal of China which was built across the North China Plain to Hangzhou. Miyun Reservoir, built on the upper reaches of the Chaobai River, is Beijing's largest reservoir, and crucial to its water supply.

The urban area of Beijing is situated in the south-central part of the municipality and occupies a small but expanding part of the municipality's area. It spreads out in bands of concentric ring roads, of which the fifth and outermost, the Sixth Ring Road (the numbering starts at 2), passes through several satellite towns. Tian'anmen (Gate of Heavenly Peace) and Tian'anmen Square are at the centre of Beijing, and are directly to the south of the Forbidden City, former residence of the emperors of China. To the west of Tian'anmen is Zhongnanhai, residence of the paramount leaders of the People's Republic of China. Running through central Beijing from east to west is Chang'an Avenue, one of Beijing's main thoroughfares.

The city's climate is a monsoon-influenced humid continental climate (Koppen climate classification Dwa), characterised by hot, humid summers due to the East Asian monsoon, and generally cold, windy, dry winters that reflect the influence of the vast Siberian anticyclone. Average temperatures in January are at around 1 ?C (33F), while average temperatures in July are around 30?C (87 F). The highest temperature ever recorded was 42 C and the lowest recorded was -27 C. In 2005, the total precipitation was 410.77 mm; the majority of it occurred in the summer.

People native to urban Beijing speak the Beijing dialect, which belongs to the Mandarin subdivision of spoken Chinese. Beijing dialect is the basis for Standard Mandarin, the language used elsewhere in mainland China, Taiwan, and Singapore. Rural areas of Beijing Municipality have their own dialects akin to those of Hebei province, which surrounds Beijing Municipality.

Beijing opera, or Peking opera, is well-known throughout the national capital. Commonly lauded as one of the highest achievements of Chinese culture, Beijing opera is performed through a combination of song, spoken dialogue, and codified action sequences, such as gestures, movement, fighting and acrobatics. Much of Beijing opera is carried out in an archaic stage dialect quite different from modern Standard Mandarin and from the Beijing dialect.

Mandarin cuisine is the local style of cooking in Beijing. The Peking Roast Duck is perhaps the most well-known dish. The Manhan Quanxi ("Manchu-Han Chinese full banquet") is a rare traditional banquet originally intended for the ethnic-Manchu emperors of the Qing Dynasty; it remains very prestigious and expensive. The Fuling Jiabing is a traditional Beijing snack food, a pancake (bing) resembling a flat disk with filling, made from fu ling (Poria cocos (Schw.) Wolf, or "tuckahoe"), an ingredient common in traditional Chinese medicine. Teahouses are also common in Beijing. Chinese tea comes in many varieties and some rather expensive types of Chinese tea are said to cure an ailing body extraordinarily well.