Johannesburg is the largest city in South Africa and the wealthiest city in Africa, with a GDP of $234 billion as of 2015. It accounts for about 17% of South Africa's GDP and 40% of Gauteng province's GDP. Johannesburg is a major center of finance, mining, manufacturing, and services in Africa.
Cairo is the largest city in Egypt and the second wealthiest city in Africa, with a GDP of $178 billion as of 2015. It accounts for about 56% of Egypt's GDP and is the main driver of the country's economy. Cairo is a hub of trade, tourism, education, culture, and government in the region.
Lagos is the largest city in Nigeria and the third wealthiest city in Africa, with a GDP of $136 billion as of 2015. It accounts for about 25% of Nigeria's GDP and 70% of the country's non-oil GDP. Lagos is a major financial, commercial, industrial, and entertainment center of Africa.
Kinshasa is the capital and largest city of the Democratic Republic of the Congo, and the fourth wealthiest city in Africa, with a GDP of $105 billion as of 2015. It accounts for about 86% of the country's GDP and is the main source of revenue for the government. Kinshasa is a hub of trade, transport, communication, and culture in Central Africa.
Luanda is the capital and largest city of Angola, and the fifth wealthiest city in Africa, with a GDP of $80 billion as of 2015. It accounts for about 45% of the country's GDP and is the main center of oil production and export in Angola. Luanda is also a major port, industrial, and commercial city in Southern Africa.