Serpa is a Portuguese raiana town in the district of Beja, Alentejo region and subregion of the Alentejo, with about 5000 inhabitants.

Serpa was already populated before the domain of the Romans, however these were that fomented the county, especially at the farm level. In 1166 it was conquered from the Moors by D. Afonso Henriques, and was lost several times in the constant struggles of the Reconquista.

It was definitely established as a county by D. Dinis, who also sent rebuild your castle and Serpa surround by a ring of walls, in 1295.

Its location, close to the Spanish border, caused serious problems for the development of this county. In the Wars of Restoration, Serpa was almost completely destroyed, including its stronghold.