The Mértola Castle, listed as a National Monument, is a military structure with a walled enclosure with an area of approximately 3,000 m2. Above the door of the Keep, there is an inscription that reads ‘This tower was commissioned by Dom João Fernandes, first Portuguese master. Era of 1330’, i.e., 1292.
Inside there are two exhibitions that show the evolution of the Castle over time and the presence of the Order of St. James in Mértola, where it established its first Portuguese headquarters in the post-reconquest period.
It is an imposing monument that dominates the historical center and is one of the main points of attraction of the heritage circuit that crosses the Town.
Museum Unit of
Opening date: first exhibition in the Keep in 1999 and current exhibition in 2014.