Bull runs of international tourist interest Activity · Cuéllar, Tierra de Pinares, Segovia The encierros are run on the last weekend of August through the countryside and the streets of the town. They were declared a festival of national tourist interest in 1977 and obtained the international category in 2018. Photo: Rastrojo (D•ES) (CC BY-SA 3.0) What to see and do in Cuéllar