Attraction information for Downton Moot: VisitBritain Downton Moot, a scheduled Ancient Monument, was a Norman motte and bailey castle covering nearly 10 acres and built by Henri de Blois, Bishop of Winchester, and grandson of William the Conqueror. Early in 18thC, the remaining 7.5 acres of earthworks were planted with trees and landscaped as a garden... visitbritain.co.uk