Belonging to the system of imprisonment present in Sardinia from the 16th to the 20th, it owes its name “Sa Bovida” to the term of Spanish origin meaning “vault,” an underpass with a pointed arch. The perimeter walls of the structure are made of shale stones, built using the technique known as “a ischeldadura.” Located in the historic center, in a setting of traditional mountain dwellings, the building houses the permanent exhibition on Magic and Sorcery in Sardinia between the 15th and 17th centuries. The exhibition focuses attention on witchcraft-magic practices and inquisitorial repressive activity starting with some historically established local witch trials, of which there is documentary evidence at the Archivio de la Corona d’Aragon in Barcelona. The materials on display concern objects used in the production of magical rituals both malefic and with a divinatory or healing background, as well as objects with apotropaic function and power. This is followed by the instruments of inquisitorial and general prison repression.