Saint Louis, Wolof Ndar, island city and seaport close to the mouth of the Senegal River, and rail end north-upper east of Dakar, Senegal. The island and city are associated with the territory by a land connect. Holy person Louis, established in 1659, is the most seasoned frontier city on the western African coast and was the authoritative capital of the French West African domains of Mauritania and Senegal. The foundation of Dakar (with a superior port), the structure of the railroad connecting the two urban communities, making of a French West Africa central station at Dakar, and the finishing of the Dakar-Niger railroad prompted the decay of Saint-Louis. It is presently an angling focus, stream rail move point for the exchange of the Senegal valley, and home to Gaston-Berger University. Holy person Louis was assigned an UNESCO World Heritage site in 2000. Pop. (2004 EST.) 162,089.