The date of Lagoa´s foundation remains uncertain, although it is known that the first settlement grew around a lagoon (lagoa), from which its name derives.
One or two interesting examples of Manueline architecture can still be found in the town, testifying to its development throughout the sixteenth century, even though its most clearly documented history begins essentially in the eighteenth century, when Lagoa was raised to the status of a town and the local municipality was formed.
The diversity of economic activities, have turned Lagoa and its surrounding region into an emblem of the modern Algarve.