Unquestionably the most important Castilian town on the eastern border, this is the capital of the Tierra de Ágreda region, lying between the Castilian plateau and the Ebro Valley. It nestles at the foot of the Moncayo mountain range, overlooking the grasslands of Soria. Known as ‘the town of three cultures’, it was inhabited by the Moors, Jews and Christians, and was an object of dispute between the kingdoms of Castile, Navarra and Aragón. Indeed, it has witnessed wars that threatened the stability of the Iberian Peninsula.

During the Middle Ages, the monarchs of Castile granted the town a series of privileges, in an attempt to secure its loyalty. The various cultures left behind a rich legacy, including the remains of the Moorish wall and two gates from the days of the Caliphs. The Jewish quarter still retains its original layout, whilst the Christian presence can be seen and felt in the religious buildings, including churches, convents and chapels. It also boasts several splendid examples of civil architecture, including the Town Hall, castle and towers.