The Fiesta de San Mateo is a week-long celebration of the Feast of San Mateo, the patron saint of Oviedo. The festival features free concerts, street performances, and traditional food and drinks. The highlight of the festival is the famous cider pouring competition, where locals compete to pour the perfect glass of cider. The festival ends with a spectacular fireworks show that lights up the sky over Oviedo. The Fiesta de San Mateo is a great choice for budget-conscious travellers who want to experience the local culture and have fun without spending a lot of money.