Lagos (Yoruba: Èkó) is a conurbation in the Nigerian state of Lagos. Often regarded as a city, it is the largest city in Nigeria and the African continent. Lagos is one of the fastest growing cities in the world and also one of the most populous urban agglomerations in the world. Lagos is a major financial centre in Africa; the mega city has the highest GDP, and also houses one of the largest and busiest ports on the continent.