S. Tommaso Church in Riva del Garda can be found on the main road leading to Arco. This is a small Romanesque church of the late 13th Century with a bell tower which has mullioned windows. It is dedicated to Thomas Becket, Archbishop of Canterbury and was built by the Counts of Arco with an adjacent leper-house, a hospital run by the friars. On the exterior there are frescoes which date to the 14th Century.