Vigo clings to the slope of Monte del Castro, overlooking a namesake bay so vast, it could shelter an entire fleet. The city's medieval heritage is seen in the narrow streets and granite houses of the Ribera del Berbes, the old fishermen's quarter. Vigo is also the gateway to Santiago de Compostela, the most venerated shrine in all Europe during the Middle Ages. Pilgrims from the four corners of Christendom flocked to the magnificent cathedral, built between the 12th and 13th centuries. The cathedral still draws thousands of daily visitors today.