
Banjul, officially the City of Banjul, is the capital and fourth largest city of The Gambia. It is the centre of the eponymous administrative division which is home to an estimated 400,000 residents, making it The Gambia's largest and densely populated metropolitan area. Banjul is on St Mary's Island, where the Gambia River enters the Atlantic Ocean. The population of the city proper is 31,301, with the Greater Banjul Area, which includes the City of Banjul and the Kanifing Municipal Council, at a population of 413,397. The island is connected to the mainland to the west and the rest of Greater Banjul Area via bridges. There are also ferries linking Banjul to the mainland at the other side of the river.

Barra, traditionally known as Niumi, is a city in The Gambia, located in the district of Lower Niumi. The predominant languages of the city are Serer and Wolof.

Biffeche or Bifeche is an area of Senegal centred on the town of Savoigne, around 30 kilometres north-east of the major coastal city of Saint-Louis.

The town and commune of Gandiaye in the Department of Kaolack, central Senegal, lies along National Route 1 about 24 kilometers from Kaolack. The population (2002) is about 10,000 consisting of the Serer, Wolof, Fula, Bambara and Jola) ethnic groups.

Mbissel is a village in the west of Sénégal. It is situated in the region of Fatick. The population is overrun by the Serer people.

Saloum Delta National Park or Parc National du Delta du Saloum in Senegal, is a 76,000-hectare (190,000-acre) national park. Established in 1976, it is situated within the Saloum Delta at the juncture of the Saloum River and the North Atlantic.

The Saloum River rises about 105 kilometers east of Kaolack, Senegal, and flows into the Atlantic Ocean. The significant Saloum Delta is located at its mouth, which is protected as Saloum Delta National Park. The river basin lies within the Serer pre-colonial Kingdom of Saloum. Mangrove forests occupy a 5-kilometer belt on either side of the river almost 70 kilometers upstream.
Serekunda is the largest urban centre in The Gambia. It is situated close to the Atlantic coast, 13 km (8 mi) south-west of the capital, Banjul, and is formed of nine villages which have grown together into a larger urban area.

The River Sine or Sine River is a river in Senegal. It flows into the Atlantic Ocean with the River Saloum in the delta of Sine-Saloum.