A moated enclosure () is located just outside Acton village, to the west of St Mary's Church; it is a Scheduled Ancient Monument. Believed to represent the site of a medieval vicarage, it consists of a square moat surrounding a raised island, and is the only local example to be filled with water. The Bluestone is a granite boulder glacial deposit situated near the Burford crossroads, which was unearthed during road building and is believed to originate from Cumbria. The name is thought to derive from blue porphyritic crystals, which are no longer visible. A local legend suggests that the boulder was thrown at Acton church from Bickerton Hill by the Devil. The stone gives its name to the small settlement of Bluestone in Henhull civil parish.