The Castillo de Luesia is the northern area of the current Spanish province of Zaragoza, it is one of the oldest fortifications of the old Kingdom of Aragon. Which is quite a reference since in these lands medieval fortresses and towers abound, in fact, in Aragon is the Castle of Loarre, the Romanesque castlebest preserved in Europe.
The reason for such an abundance of castles was that in this area between the end of the 10th century and the beginning of the 11th there was the border between the Christian and Muslim territories. That is why defensive lines were built to strengthen and defend the reconquered territories. And in one of these lines the Castle of Luesia was integrated, which was related to the neighbors of Biel, Sibirana or Uncastillo. All of them very powerful constructions and of enormous quality, so it is not surprising that they have remained standing to this day.
Of what has come down to the present day, the elongated tower that rises at one end of what would be the fortress is very striking. Which sits on a hill high above the town center and over the neighboring Romanesque church of San Salvador.
This tower has a curious floor plan adapted to the terrain, since its northwest part simulates a narrow ship's prow. That is, it hasa pentagonal plant to the outside, since the interior is trapezoidal. It is an eminently defensive work, which is why stone abounds and windows are scarce, and the few that exist have the shape of loopholes.
The tower was divided into four stories in height. And today they would be accessed through a rear door. Specifically from the 16th century when it was ordered to be built by Archbishop Hernando of Aragón, since this town in that century became the possession of the Archbishopric of Zaragoza.
On the other hand, the original door remains on the second floor, since it would be accessed by a staircase to facilitate its defense. This door opens with a semicircular voussoir arch that extends into a hallway covered with a barrel vault. That is, all the most purely Romanesque elements.
The tower would originally have a ground floor that would serve as a warehouse. A second where the door would be, a third to serve as a home and a last one as a military and defense area, although it has lost the crenellated top.
However, if the tower has survived quite well to this day, the same has not happened with the rest of this 11th century fortress, since part of its wall that would surround the construction patio and some other room. And it is that at one point the neighbors made use of many of its well-squared stone ashlars to build their own homes.