Beijing, alternatively romanized as Peking, is the capital of the People's Republic of China. It is the world's most populous national capital city, with over 21 million residents within an administrative area of 16,410.5 km². It is located in Northern China, and is governed as a municipality under the direct administration of the State Council with 16 urban, suburban, and rural districts. Beijing is mostly surrounded by Hebei Province with the exception of neighboring Tianjin to the southeast; together, the three divisions form the Jingjinji megalopolis and the national capital region of China.
Beijing is a global city and one of the world's leading centres for culture, diplomacy and politics, business and economics, education, language, and science and technology. A megacity, Beijing is the second largest Chinese city by urban population after Shanghai and is the nation's cultural, educational, and political center. It is home to the headquarters of most of China's largest state-owned companies and houses the largest number of Fortune Global 500 companies in the world, as well as the world's four biggest financial institutions by total assets.