Signaling of the Saint James Way near the Porto's Cathedral.

The city of Porto was and remains a key point in the itinerary of pilgrims on their way to Saint James of Compostela (Portuguese: Santiago de Compostela). To this day, pilgrims stamp, in the Cathedral, the “Compostela” , a credit document that proves the passage through the reference points of the path and gives them the quality of pilgrims to the tomb of St. James of Compostela.