Castle of Llers Monument · Llers, Alt Empordà, Girona Image of Llers, not of the place itself. The castle of Llers stands on a site that in the Middle Ages was the border between the counties of Besalú and Empúries, which explains its strategic importance since ancient times. Together with eleven other castles that depended on it, it formed a defensive network of great scale; the earliest documented references to the site date from the 10th century, and by the 12th the lineage of the Llers already appears in documentation related to the houses of Besalú and Barcelona. In the second half of that century, Arnau de Llers brought under his rule the possessions of the Cerviá, inherited through his father's line, and the barony of Llers, through his mother's. In the 13th century the castle was extended by the Rocabertí, and from its position it offers an exceptional visual command of the whole of the Empordà. Photo: Albert Sarola Juanola (CC BY-SA 3.0 es) What to see and do in Llers