Braga is the center of one of the oldest dioceses of the iberian peninsula, dating to the back to the Migration Period, when Martin of Dumio was able to christianize the invading Suebi tribes, who founded a kingdom here, after the roman power crumbled.
The cathedral originally dates back to the 12th century, but it got greatly modified, resulting in a mix of romanesque, gothic baroquche parts. This is the main portal (western façade). The gallery was built in gothic style between 1486 and 1501, the middle arch seems older, the upper part and the towers were "modernised" during the 19th century.