Hong Kong (香港; "Fragrant Harbour"), traditionally Hongkong, officially known as Hong Kong Special Administrative Region of the People's Republic of China, is an autonomous territory on the southern coast of China at the Pearl River Estuary and the South China Sea. Hong Kong is known for its skyline and deep natural harbour. It has an area of 1104 km2 and shares its northern border with the Guangdong Province of Mainland China. Home to around 7.2 million Hongkongers of various nationalities, Hong Kong is one of the world's most densely populated regions.
On 1 July 1997, the transfer of sovereignty of Hong Kong from the United Kingdom to the People's Republic of China took place, officially marking the end of Hong Kong's 156 years under British colonial governance. As the last Crown Colony of the United Kingdom, the loss of Hong Kong also represented the end of the British Empire. At the same time, Hong Kong switched its country of administration overnight to become China's first Special Administrative Region.