The Portuguese built several small forts around Fort Jesus in Mombasa to a better defence of the island. About Fort Jesus existing so many documentations but about the others nearly nothing. There also confusions about the names. The following list is the results of the researches made by Hans-Martin Sommer, M.A. Marine Archaeologist Fort Jesus Museum Mombasa.

List of Portuguese Fortifications in Mombasa:

FORT JESUS: the main Portuguese Fortress.

MAKUPA FORT (Pos: 04 02' 12,7" S 39 39' 09,7" E): a small fort (15x15 m) and two towers at each side in a distance of about 100 metres.

ST. JOSEPH FORT (Pos: 04 04' 18,1" S 39 40' 56.1" E): a horseshoelike fortification in good condition. At about 100 metres distance to St. Joseph it was the Portuguese chapel "Nossa Senhora das Merces" (Pos: 04 04' 21,2" S 39 40' 50,7" E).

GOLF COURSE FORT (Pos: 04 04' 20,8" S 39 39' 07,5" E): a few remains near the Golf Course.

HORSE SHOE FORT (Pos: 04 04' 43,8" S 39 40' 20,2" E): a very small fortification in good condition.

FORT OF THE ANCHORAGE (Pos: 04 04' 33,06" S 39 39' 52,33" E): also called 'the round fort' or 'the hexagonal fort", completly gone.