 During the period of Iberian migration, the Suebi chose "Bracara Augusta" as the capital of their kingdom due to its strategic importance and settlement.However, the early settlements floundered with successive conquest, under the Visigothic tribes, southern Moorish invaders and the Christian Reconquista of the Kingdom of León.Although reliable information about the evolution of Braga's early defences are lacking, it is known that, from the 11th century, a second wall was under construction, to the south and to the west, complementing the old Roman wall in the north.