422km (262 miles) N of Madrid, 60km (37 miles) SW of Pamplona

The most visited town in northern Aragón is Sos del Rey Católico, so named because it was the birthplace of Ferdinand, the Catholic king, in 1452. Locals will point out the Palacio de Sada, where the king is said to have been born. The kings of Aragón fortified this village on the Navarre border with a thick wall. Much of that medieval character has been preserved -- enough so that the village has been declared a national monument. The town is more interesting than its minor monuments, and you can wander its narrow, cobbled streets, stopping any place you fancy.