Hedingham Castle, in the village of Castle Hedingham, Essex, is arguably the best preserved Norman keep in England. The castle fortifications and outbuildings were built around 1100, and the keep around 1140. However, the keep is the only major medieval structure that has survived, albeit less two turrets. It is a Grade I listed building and a scheduled monument. The keep is open to the public. Description The manor of Hedingham was awarded to Aubrey de Vere I by William the Conqueror by 1086. The castle was constructed by the de Veres in the late 11th and early 12th centuries, and the keep in the 1130s and 1140s. To accommodate the existing castle, a large ditch was cut through a natural spur westward into the Colne Valley in order to form a ringwork and inner bailey; an outer bailey extended south further into the valley and what is now the modern village of Castle Hedingham. The stone keep is the only mediaeval structure to survive, and is in an excellent state of preservation. The keep is nearly square, a common shape for Norman keeps. The east and west sides are long and the north-south sides about . The main part of the keep stands more than tall, and the turrets rise an additional above the parapets, commanding the countryside around it from its elevated position atop the ringwork. The walls are about thick at the base and average thick at the top. They are constructed from flint rubble bound with lime mortar, but, very unusually for an Essex castle, are faced with ashlar stone transported from a quarry in Barnack, Northamptonshire. The keep has five floors including the Great or Banqueting Hall with a great fireplace and a central arch extending two stories. The top floor may have been added around the 15th century, replacing an impressive pyramid-shaped roof. This is a recent theory, however, and many older sources have noted the similar plans of Hedingham Castle and Rochester Castle, which was begun about 1126 and has four floors and four turrets. Changes were made in subsequent years, particularly during the Tudor period. Two of the original four corner turrets are missing. It seems likely, however, that their demise was an attempt to demolish the building for materials rather than a result of military action. The outer buildings, including the hall, drawbridge and others, were replaced during the Tudor period.