Lagos: the largest city in Africa

Lagos is a port and the most populous city in Nigeria. It is the second fastest-growing city in Africa and the seventh in the world. The population of Lagos according to the Lagos State Government, was 17.5 million. These figures are however disputed by the Nigerian Government and judged unreliable by the National Population Commission of Nigeria. The latest reports estimate the population at 21 million, making Lagos the largest city in Africa. (Source: http://en.wikipedia.org/wiki/Lagos)