Maiduguri is the capital and the largest city of Borno State in north-eastern Nigeria, on the continent of Africa. The city sits along the seasonal Ngadda River which disappears into the Firki swamps in the areas around Lake Chad. Maiduguri was founded in 1907 as a military outpost by the British Empire during the colonial period. As of 2022, Maiduguri is estimated to have a population of approximately two million people, in the metropolitan area.