from Wikipedia Abidjan:
Abidjan is the largest city and former capital of Côte d'Ivoire (Ivory Coast). It is the commercial and banking center of Côte d'Ivoire as well as the de facto capital (Yamoussoukro is the official capital.) It is also the most populated city in French-speaking Western Africa. It stands in Ébrié Lagoon on several converging peninsulas and islands, connected by bridges.