The church of San Pietro was originally a single nave. In the XIII century the side walls and the inner facade were enriched by a cycle of frescoes. The temple is flanked by a squat bell tower that rises detached from the main body of the building. The latter is internally with a rectangular plan, divided into three naves with two chapels on the left side and one on the right. The apse is a quadrangular, flanked by two chapels on the sides. As mentioned above, the side walls and the inner facade have the remains of a cycle of frescoes, one of the few and the most complete fresco cycles of medieval age present in Sardinia. The painted scenes represent episodes of the Old and the New Testament and have important connections with the pictorial cycles present in the area umbro-roman in the second half of the XII century.
