The parish church occupies the site of a Benedictine priory founded around 1100, and parts of the original Norman structure survive in the walls. The building was substantially rebuilt in the 15th century when the town was prosperous from the wool trade, and the result is a large and well-proportioned church — bigger than you would expect in a village this size.
The interior contains an exceptional medieval oak rood screen, a fine set of bench ends with carved figures, and monuments to the Luttrell family who dominated the town for six centuries. The tithe barn of the original priory still stands nearby at Priory Green, now converted to community use but retaining its medieval roof timbers. Together the church and barn give a clear picture of the scale of the medieval religious establishment that once dominated Dunster.