Bissau is the capital and largest city of Guinea-Bissau. It serves as the nation's primary administrative and military center, as well as its major port. The city is situated on the Geba River estuary along the Atlantic Ocean.
As of 2015, Bissau had a population of 492,004 residents. While some sources may associate the name with other regions, it is primarily recognized as the seat of government for Guinea-Bissau.