The history of Banjul, the capital of The Gambia, is closely tied to the colonial era and its strategic position at the mouth of the river bearing the same name. The city, which grew from a military post into a bustling administrative centre, reflects the significant developmental stages of the entire region.
The city was founded by the British in 1816 under the leadership of Captain Alexander Grant. It was initially established as a military and trading post on St. Mary's Island (today Banjul Island) to control the mouth of the Gambia River and suppress the slave trade. The settlement was named Bathurst in honour of Henry Bathurst, who was the British Secretary of State for the Colonies at the time. The city received its current, more authentic name — Banjul — only in 1973.
The development of Bathurst, and subsequently Banjul, was determined by several key factors. Firstly, its geographical location on an island at the mouth of a major navigable river, the Gambia, made the city an ideal place for controlling maritime and river trade routes. This provided natural defence and access to the African interior. Secondly, the city quickly turned into an important trading centre: groundnuts and palm oil became the main products for export to Europe, while the deep harbour allowed for the accommodation of large ocean-going vessels. Finally, from 1888, Bathurst became the administrative centre of the British colony of The Gambia, securing its status as the political capital, which it retains to this day.
In the early period of its existence, the city was a melting pot of cultures, where European colonial traditions mixed with the lifestyle of local African peoples. The architecture of the central part was built up with European-style houses adapted to the hot climate, featuring loggias and wide roofs, while the outskirts retained a more traditional African appearance with bamboo structures. The economy depended entirely on the port and the export of agricultural produce, which defined its role as the country's main economic hub for many years.