Foundation and Ancient Roots
The history of Portimao is rooted in deep antiquity, long before the emergence of modern Portugal. Thanks to its strategically advantageous location at the mouth of the Arade River, this territory was inhabited by humans as early as the Neolithic and Bronze Ages, as evidenced by the megalithic monuments in the nearby area of Alcalar.
According to a common historical hypothesis, the city was founded (or significantly fortified) by the Carthaginians. There is a legend attributing the creation of the port to the famous commander Hannibal Barca, who allegedly named the settlement Portus Hannibalis. Subsequently, the region was integrated into the Roman Empire, becoming a vital link in the maritime trade of the province of Lusitania.
Key Development Factors
The transformation of a small settlement into an important urban centre was driven by a combination of geographical and economic advantages:
- Strategic Harbour: The natural bay at the mouth of the Arade River served as a safe haven for ships, protecting them from Atlantic storms, and opened a waterway deep into the mainland to the ancient regional capital — the city of Silves.
- Maritime Trade: Portimao became a natural stopping point for Phoenicians, Greeks, and later Romans navigating along the coast of the Iberian Peninsula.
- Natural Resources: An abundance of fish in coastal waters and the fertile lands of the river valley created a base for the sustainable sustenance of the population.
Early Economy and Cultural Influence
The economic foundation of early Portimao was based on fishing and seafood processing. Archaeological finds confirm that as early as the Roman period, fish salting and the production of the famous garum sauce, which was exported to other parts of the empire, were actively practiced here.
The cultural appearance of the city was formed under the influence of successive civilizations. After the fall of Rome and the arrival of the Visigoths, a long period of Moorish rule ensued. The Arabs introduced new methods of irrigation and architectural features, leaving a noticeable mark on the toponymy and traditions of the Algarve region before the city was finally reconquered by the Portuguese crown in the 13th century.