The Castelo de Cecos
In the municipality of Ibias there are a total of six hillfort-shaped ancient settlements, although there is insufficient evidence to determine their time of occupation. Nevertheless, the visible presence of limitation structures (ditches, walls, parapets) are definitive proof of their nature. They are Os Castros de Villarmeirín, El Castelo de Fondodevilla in Tormaleo, Castro Mouroso in Dou, O Castelo in Sena, Castro de O Coredeo in A Lagúa, Torre de El Castelo de Alguerdo and El Castelo, which is described below.