High Quality Content by WIKIPEDIA articles! The Cathedral of Prato (Italian: Duomo di Prato) is the main Catholic church of Prato, Tuscany, Central Italy and seat of the bishop. It is dedicated to St. Stephen, the first Christian martyr. It is one of the most ancient churches in the city, existing already in the 10th century and having been built and in several successive stages in the Romanesque style. The churches has a number of notable works of art, in particular, fine sculpture.