2. Tunis, Tunisia

Tunis is both the capital and the largest city of Tunisia. The greater metropolitan area of Tunis, often referred to as Grand Tunis, holds some 2,700,000 inhabitants. As the capital city of the country, Tunis is the focus of Tunisian political and administrative life; it is also the centre of the country’s commercial activity.

1. Johannesburg, South Africa 

By population, Johannesburg is the largest and wealthiest city in South Africa. Called Africa’s economic powerhouse, this city is also the largest economy of any metropolitan region in Sub-Saharan Africa.