|Region||Bissau Autonomous Sector|
|• Total||77.5 km2 (29.9 sq mi)|
|Elevation||0 m (0 ft)|
|• Density||5,009/km2 (12,974/sq mi)|
|ISO 3166 code||GW-BS|
The city was built by the Portuguese in 1687. It became the capital of Portuguese Guinea in 1942, and has been the capital since independence was declared, except for a short time in 1973 and 1974 when the capital was at Boe. Bissau is famous for having a carnival every year.