Togo is a republic in West Africa, bordered on the north by Burkina Faso (Upper Volta), on the east by Benin, on the south by the Gulf of Guinea (an arm of the Atlantic Ocean), and on the west by Ghana. Togo extends about 550 km (about 340 mi) in a northern-southern direction and ranges from about 40 to 130 km (about 25 to 80 mi) in width. The country has an area of 56,785 sq km (21,925 sq mi). Lomé is the capital and largest city.