Guinea located in West Africa has a curved shape, with its base at the Atlantic Ocean, inland to the east, and turning south. The base borders Guinea-Bissau and Senegal to the north, and Mali to the north and north-east; the inland part borders Côte d'Ivoire to the south-east, Liberia to the south, and Sierra Leone to the west of the southern tip. Its water sources include the Niger, Senegal, and Gambia rivers. Conakry is the capital, seat of the national government and largest city.
Guinea is roughly the size of the United Kingdom and slightly smaller than the U.S.A. state of Oregon with 200 miles (320 km) of coastline and is divided into four main regions: the Basse-Cote lowlands in the west along the coast, populated mainly by the Susu ethnic group; the cooler, mountainous Fouta Djalon that run roughly north-south through the middle of the country, populated by Peuls, the Sahelian Haute-Guinea to the northeast, populated by Malinkes, and the forested jungle regions in the southeast, with several ethnic groups.