Jaca, situated on a hill above the Río Aragón, was the first capital of the kingdom of Aragon which was established in 1035. It is now the see of a bishop, and in summer becomes a branch of Zaragoza University, which runs language courses here. On the first Sunday in May every year the "Moros y
Cristianos" festival commemorates a victory over the Moors in 760. In the Middle Ages Jaca was an important staging-point on the Way of St James, and evidence of its importance is still provided by the Puente San Miguel on the outskirts of the town.