The history of Haiphong is closely interwoven with its strategic position on the coast of the Gulf of Tonkin. Although settlements have existed on this site for many centuries, the modern city owes its growth and status to the colonial era. The city's name, "Hải Phòng", translates as "coastal defence", indicating its long-standing role as a military and protective outpost. The first fortifications here were established in ancient times to protect the maritime approaches to the Red River Delta.
A key stage in the city's formation was the late 19th century, when Vietnam became part of French Indochina. In 1888, the President of France issued a decree officially establishing the city of Haiphong, which quickly transformed into a major naval base and the most important trading port in the entire region, earning the unofficial nickname "The Venice of Tonkin". Its geographical location made it the ideal gateway for trade between Northern Vietnam and the rest of the world, which determined its rapid development.
From the very beginning, Haiphong's economy was oriented towards the sea and industry. The city became a centre for shipbuilding, fishing, and goods processing. Culturally, Haiphong represents a unique blend of traditional Vietnamese life and European heritage. French influence is still visible in the architecture of the central districts, where elegant colonial-era buildings have been preserved, including the famous Opera House. This mix of styles and its dynamic port atmosphere have formed the city's distinct character, which it retains to this day.