The Gothic church, with white and pink stone façade , has a twin portal redone at the top in the Mannerist style. The interior has a single nave, and was renovated in the XVIII and XIX Centuries. The side chapels have frescoes from the XIV and XVI Centuries, including those by Arrigo Fiammingo and Giannicola di Paolo. The monastery was used for many years as a barracks. On the right side of the church there is an oratory, with two superimposed levels. The older one has a nave decorated with excellent XIV and XVI Century frescoes; the other level, built in the mid XVI Century, was renovated in the XVII Century with valuable Baroque furnishings and with paintings of the XVIII Century.