The first military building was erected in the thirteenth century, and the lieutenants of the County owned it by royal concession, corresponding among other counts to the infant Don Enrique de Trastamara, Bertrand Duguesclin, Fernando de Castro, the Counts of Trastamara and finally was granted by the Catholic Monarchs, who spent the night there and repaired it at the expense of the Holy Brotherhood, to the Counts of Lemos. Carlos I and Felipe II also spent the night there.

It had a large fence, four towers, including the Homenaje and Mercado towers, basements, moats, counter moats and had several houses inside.

Collapsed on the occasion of the “Revolta Irmandiña” (end of the XV century), it was rebuilt at the expense of the vassals of the “Cinco Pobras”.

It was the seat of the Regiment and Justice of the Town and Marquisate of Sarria and the residence of its Corregidores until the third decade of the 18th century. It stood until 1860, when it was sold by the Duke of Alba, and the land was acquired, in halves, by Don Manuel Batallón and the City Council, while the stone walls and towers were bought by several families of the town.

Only a tower of slab flank and granite stone, covered that was of mortar, that reaches 15 meters of height is conserved.

At its top is reached by a staircase open in part by a stretch of wall, and retains coats of arms of the Castro, Enriquez and Osorio. On the wall near the farm there are several crosses of a “viacrucis” of the XVIII century.