One of the cleanest cities in Spain, Oviedo is the capital of the Asturias region, located in the north of the country. The old part of the city is a maze of narrow streets and alleyways which look much as they have for centuries. The main historic monument in Oviedo is the cathedral built during the 14th to 16th centuries and dedicated to San Salvador, it was erected on the site of an earlier basilica ordered by Alfonso II. Oviedo was also the site of Alfonso’s royal court, which remained there until moved to Leon. Oviedo these days is a busy commercial city and the location of a University. Oviedo Map.