Kowloon in the context of "Rooftop slum"

Hong Kong is a special administrative region of China. Situated on China's southern coast just south of Shenzhen, it consists of Hong Kong Island, Kowloon, and the New Territories. With 7.5 million residents in a 1,114-square-kilometre (430 sq mi) territory, Hong Kong is the fourth-most densely populated region in the world.

Hong Kong was established as a colony of the British Empire after the Qing dynasty ceded Hong Kong Island in 1841–1842 as a consequence of losing the First Opium War. The colony expanded to the Kowloon Peninsula in 1860 and was further extended when the United Kingdom obtained a 99-year lease of the New Territories in 1898. Hong Kong was occupied by Japan from 1941 to 1945 during World War II. The territory was handed over from the United Kingdom to China in 1997. Hong Kong maintains separate governing and economic systems from that of mainland China under the principle of one country, two systems.

Hong Kong Island (simplified Chinese: 香港岛; traditional Chinese: 香港島; pinyin: xiāng gǎng dǎo; Jyutping: Hoeng1 gong2 dou2; Cantonese Yale: Hēunggóng dóu) is an island in the southern part of Hong Kong. The island, known originally and on road signs simply as "Hong Kong", had a population of 1,289,500 and a population density of 16,390 per square kilometre (42,400/sq mi), as of 2023. It is the second largest island in Hong Kong, with the largest being Lantau Island. Hong Kong Island forms one of the three areas of Hong Kong, with the other two being Kowloon and the New Territories.

In 1842, following the Qing dynasty's defeat at the First Opium War (1839–1842), Hong Kong Island was formally ceded in perpetuity to the United Kingdom under the Treaty of Nanking. The City of Victoria was then established on the island by British forces, named in honour of Queen Victoria. At that time, the island had a population of about 3,000 inhabitants scattered in a dozen fishing villages.

The New Territories is the largest of the three areas of Hong Kong, alongside Hong Kong Island and Kowloon. It makes up 86.2% of Hong Kong's territory, and contains around half of the population of Hong Kong. Historically, it is the region described in the Convention for the Extension of Hong Kong Territory. According to that treaty, the territories comprise the mainland area north of Boundary Street on the Kowloon Peninsula and south of the Sham Chun River (which is the border between Hong Kong and mainland China), as well as over 200 outlying islands, including Lantau Island, Lamma Island, Cheung Chau, and Peng Chau in the territory of Hong Kong.

Later, after New Kowloon was defined from the area between the Boundary Street and the Kowloon Ranges spanned from Lai Chi Kok to Lei Yue Mun, and the extension of the urban areas of Kowloon, New Kowloon was gradually urbanised and absorbed into Kowloon.

The Kowloon Peninsula is a peninsula that is part of the southern part of the main landmass in the territory of Hong Kong, alongside Victoria Harbour and facing toward Hong Kong Island. The Kowloon Peninsula and Ngong Shuen Chau comprises the Old Kowloon. The Old Kowloon and the area of New Kowloon are collectively known as Kowloon.

Geographically, the term "Kowloon Peninsula" may also refer to the area south of the mountain ranges of Beacon Hill, Lion Rock, Tate's Cairn, Kowloon Peak, etc. The peninsula covers five of the eighteen districts of Hong Kong. Kowloon Bay is located at the northeast of the peninsula.

The Battle of Hong Kong (8–25 December 1941), also known as the Defence of Hong Kong and the Fall of Hong Kong, was one of the first battles of the Pacific War in World War II. On the same morning as the attack on Pearl Harbor, forces of the Empire of Japan attacked the British Crown colony of Hong Kong around the same time that Japan declared war on Britain. The Hong Kong garrison consisted of British, Indian and Canadian units, also the Auxiliary Defence Units and Hong Kong Volunteer Defence Corps (HKVDC).

Of the three territories of Hong Kong, the defenders abandoned the two mainland territories of Kowloon and New Territories within a week. Less than two weeks later, with their last territory Hong Kong Island untenable, the colony surrendered. The fall of the city is regarded as Black Christmas as it marked the beginning of a brutal occupation by Japan that would last until its liberation in the summer of 1945. Britain's defeat in Hong Kong alongside the Fall of Singapore in 1942 would irreparably damage its reputation in Asia as a major military power.

An oil terminal (also called a tank farm, tankfarm, oil installation or oil depot) is an industrial facility for the storage of oil, petroleum and petrochemical products, and from which these products are transported to end users or other storage facilities. An oil terminal typically has a variety of above or below ground tankage; facilities for inter-tank transfer; pumping facilities; loading gantries for filling road tankers or barges; ship loading/unloading equipment at marine terminals; and pipeline connections.

Hong Kong is administratively divided into three areas: Hong Kong Island, Kowloon, and the New Territories.