In the Algarve, archaeological remains have been discovered tracing settlement back over 6,000 years. However, it was under the Roman empire, that the southern coastline was settled in a more organised fashion. The city of Balsa was established in the 1st century on the route between Ossonoba (Faro) and Baesuris (Castro Marim) with its main activity of fishing.
Under Manuel I, royal patronage was reflected in the architectural heritage and in the city’s expansion.