Castellina, which sits perched on a ridge with great views, was another outpost during the conflicts between Florence and Siena. Take a walk along the Via delle Volte, the arched laneway that runs along the east side of the city walls. The Rocca Comunale is a 14th century fortress that is now utilised as town hall. The neo-Romanesque style Church of San Salvatore dates from the 16th century, but was rebuilt and extended after WWII. There is an Etruscan Tomb just outside of town.