Ho Chi Minh City (HCMC; Vietnamese: Thành phố Hồ Chí Minh), commonly known as Saigon (Vietnamese: Sài Gòn), is the most populous city in Vietnam, with a population of around 9.3 million in 2023. The city's geography is defined by rivers and canals, of which the eponymously-named Saigon River is the largest. As a municipality, Ho Chi Minh City consists of 16 urban districts, five rural districts, and one municipal city (sub-city). As the largest financial centre in Vietnam, Ho Chi Minh City has the highest gross regional domestic product out of all Vietnam provinces and municipalities, contributing around a quarter of the country's total GDP. Ho Chi Minh City's metropolitan area is ASEAN's 6th largest economy, also the biggest outside an ASEAN country capital.
Since ancient times, water transport has been heavily used by inhabitants in the area. The area was occupied by Champa from 2nd century AD to around the 19th century, due to Đại Việt's expanist policy of Nam tiến. After the fall of Citadel of Gia Định, Saigon was the capital of French Indochina from 1887 to 1902, and again from 1945 until its cessation in 1954. Following the partition of French Indochina, it became the capital of South Vietnam until it was captured by North Vietnam, who renamed the city after their former leader Hồ Chí Minh, though the former name is still widely used in informal usages. Beginning in the 1990s, the city underwent rapid expansion and modernization, which contributed to Vietnam's post-war economic recovery and helped revive its international trade hub status.
Ho Chi Minh City has a long tradition of being a productive trading and manufacturing place in Vietnam. As such, the city is also the busiest international transport hub in Vietnam, as Tân Sơn Nhất International Airport accounts for nearly half of all international arrivals to Vietnam and the Port of Saigon is among the busiest container ports in Southeast Asia. Ho Chi Minh City is also a popular tourism destination. Some of the war and historic landmarks in the city include the Independence Palace, Landmark 81 (tallest building in Vietnam), the War Remnants Museum, and Bến Thành Market. The city is also known for its narrow walkable alleys and night life. Currently, Ho Chi Minh City is facing increasing threats of sea level rise and flooding as well as heavy strains on public infrastructures.

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