Saint-Louis, Senegal, is a historic city located at the mouth of the Senegal River. Founded in the 17th century, it served as the capital of French West Africa and is known for its colonial architecture and vibrant culture. The city is situated on an island, connected to the mainland by bridges, and is recognized as a UNESCO World Heritage site. The city is famous for its annual Saint-Louis Jazz Festival, which attracts musicians and visitors from around the world. Saint-Louis is also home to the Langue de Barbarie National Park, a protected area that supports diverse wildlife, including migratory birds and various marine species.