The term 'Northern Spanish City' refers to the city of Oviedo, which is located in the northern region of Spain. It is the capital of the Principality of Asturias and has a population of around 225, 000 people. Oviedo is known for its historical monuments, such as the Cathedral of San Salvador, which dates back to the 12th century. The city also has a vibrant cultural scene, with many festivals and events taking place throughout the year.