Beijing is the Capital of the Peoples republic of China . It is located at 39'56"N and 116'20" E. Two-thirds of it are mountainous areas encircling the western, northern and eastern sides of the city. The centre of the city is 43.71 meters above the sea level.
Beijing, including the urban and the suburban areas and the nine counties under its administration, is located in the north-eastern corner of China, roughly the same latitude as New York City. Beijing municipality has a total area of 16,800 sq km (6552 sq mi). roughly the size of Belgium.  (big isn't it)
Beijing has 10.6 million permanent residents and over 3 million transient population. It is the centre of China's political and economic life.
The city is a mixture of old and modern architecture laid out in a very orderly design. One of it's downsides is the air pollution which, at it's worst in winter, can be extreme.