Please answer the following question: Church of San Salvador de Valdedios - The church of the Holy Savior of Valdedios (Spanish: Iglesia de San Salvador de Valdedios) is a Roman Catholic pre-romanesque church located next to Villaviciosa Asturias Spain.The church stands in the Boides valley (Villaviciosa) the place where Alfonso III of Asturias was detained when he was dispossessed by his sons and where there used to be an old convent governed by the Benedictine Order substituted in the 13th century by the Cistercians. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Building