Mapledurham is a small village, civil parish and country estate in the county of Oxfordshire. The village is located on the north bank of the River Thames, 4 miles from Reading. The village is the location of the Mapledurham Watermill, the last operational watermill on the Thames The civil parish of Mapledurham includes the settlements of Trench Green and Chazey Heath in the Chiltern Hills above the village. The riverside church of St Margaret's was begun in the late 13th century, but a church has existed on this site since Norman times. The Mapledurham estate owns much of the village and civil parish, including both the Mapledurham Watermill and Mapledurham House, the stately home that forms the headquarters of the Mapledurham estate. It belongs to the family of John "Jack" Eyston. The house, watermill and surrounding grounds are open to the public on weekend and bank holiday afternoons from April to September. The estate consists of a farm, plus numerous leisure activities including two golf courses, fishing and paint ball, plus several holiday cottages. On summer weekends the village can be reached by a boat service from Reading. Mapledurham has one pub, The Pack Saddle, in Chazey Heath.