It was built by Suero Gómez de Sotomayor -one of the most important noblemen of the region- in the 15th century. The remains of the old monastery of Calogo (11th century), in Vilanova, were used in its construction. Although it is composed of a central part flanked by two towers, presenting therefore the characteristic aspect of a Galician noble house, its structure is different, for instance, to the one of O Rial, because in Sobrán you can easily notice its medieval origin and what was added later. The parochial church of Saint Martin (12th century) is at its side.