Oviedo is a city in northern Spain with a population of over 225, 000 people. It is the capital of the Principality of Asturias and is located on the southern coast of the Bay of Biscay. Oviedo is known for its historical monuments, including the Cathedral of San Salvador, which dates back to the 9th century. The city is also home to the University of Oviedo, one of the oldest universities in Spain.