The monastery of San Salvador de Oña Monument · Oña, La Bureba, Burgos Count Sancho García founded it in 1011, and it became one of the most influential institutions in Castile. It holds a royal pantheon with the tombs of Castilian and Navarrese counts and kings beneath the abbey church. He founded it as a double monastery for his daughter Tigridia; in 1033 it came under the authority of the Cluniac monks, its period of greatest development, during which it came to have under its jurisdiction more than seventy monasteries and churches in the north of Burgos, Cantabria and the Palencia stretch of the Pisuerga. The French invasion and the Mendizábal disentailment later caused destruction and the abandonment of the community; in the 16th century the monk Ponce de León founded there the world's first school for the deaf and mute. Since 1835 the church has been a parish, and the monastic buildings, acquired by the Jesuits in 1880, housed their Colegio Máximo of theology and philosophy until 1967. Photo: Lancastermerrin88 (CC BY-SA 4.0) What to see and do in Oña