It is in the area of Viana do Castelo, at Monte de Santa Luzia, where vestiges of Citânia de Santa Luzia were found, also known as the "old town". This town, dating from the Iron Age, was inhabited between the 8th and 5th centuries BC. Despite its pre-Latin origin, the fortified town achieved greatest splendor during Romanisation, a fact proven by the appearance of a small monetary treasure with pieces dated at between 330 and 408 AD. Its visual domain over the surrounding areas, the mouth of the River Lima and the Atlantic coast gave it a strategic position. The defensive system is formed by three orders of walls, reinforced with two intermediate moats and a turret. In the interior of the fortified enclosure, there are vestiges of unusual circular and rectangular houses. Some also feature a rare polygonal apparatus and an atrium that, in some cases, housed ovens for baking bread. Stop and admire the landscape once again before returning to the road and continuing your discovery of what Monte de Santa Luzia has to offer.