The Cathedral of Bissau, Catholic cathedral in Bissau, Guinea-Bissau.

The Cathedral of Bissau, on Avenida Amílcar Cabral, is set back from the avenue behind a forecourt. Its interior has three naves of five bays, the side aisles half the width of the central one, entered through a narthex that also leads to the bell towers, a burial chamber and the baptistery. The transept is narrow, ending in an apse with the high altar.

Construction began in 1945 and replaced an earlier church that stood at the same location from 1935. The new building was designed by notable architects and shaped the city's religious and architectural heritage.

Mass is celebrated in Portuguese, and the cathedral has long been the stage for public Catholic ceremony: its consecration in December 1950 ran over several days, ending with a torchlit procession from the Amura parish church. Bishop Settimio Ferrazzetta preached his 1998 peace sermon here and is buried inside.

The cathedral stands set back from Avenida Amílcar Cabral, leaving a small forecourt before the main entrance. The interior has three aisles of five bays, with a narthex giving access to the bell towers, the burial chamber and the baptistery. The north tower's green light, flashing every 2 seconds with a 7-second eclipse, guides ships into the Port of Bissau.

The north tower, 36 metres high, carries a working lighthouse maintained by the Capitania dos Portos, Serviços de Marinha. Its green light flashes for 2 seconds every 7 seconds, guiding ships through the Geba River estuary to the Port of Bissau.