Once known as San Martino, San Domenico dates back to the 11th - 12th Century. It was enlarged in the 14th Century by the Dominicans and more recent renovation work brought to light some 16th Century frescoes by the Nelli School. Most of the interior is the work of the 18th Century remodelling and there are a number of interesting things to see, including beautiful earthenware from the 1400s and finely inlaid work on the wooden lectern.