Castle

As a border town between the neighboring kingdoms of Navarre and Aragon, Sos had its fortified castle to reinforce the defensive line. This was really the origin of the population, which was gradually building their homes around this primitive castle, which was originally built of wood. It is located at the top of the Feliciana rock, the highest part of the town, which facilitated the defense of the square. Nothing remains of the original wooden castle. As construction techniques evolved, wood was replaced by stone, and currently the most remarkable vestige of the 12th century castle that has been preserved is the restored keep.