The village of Castle Acre is a rare surviving example of a planned Norman defended settlement, complete with castle, village (complete with a mediaeval gate and earth ramparts) and a now-ruined Priory.
The castle itself was founded by William de Warenne, a leading knight in the Norman conquest, around 1070. He acquired what had been a small Saxon settlement through his wife Gunrada, whose family had also been enriched through the Conquest.
He set about developing the castle with the erection of classic Motte-and-Bailey earthwork defences, although the main building seems to have been more of a comfortable defended Manor House rather than a castle.
In the mid 12th Century, the complex was significantly strengthened by his grandson, William III de Warenne, doubtless in response to the civil war sparked by the contested succession after the death of Henry II. William heightened the ramparts, crowned them with curtain walls and converted the house into a large defended tower with 6ft thick walls.
The castle was further developed by Hamelin Plantagenet, the second husband of William's heir, his daughter Isabel, who probably also built the town gates in the late 12th Century. However by the end of the 14th Century, the Castle was little used and may even been derelict.
From the 16th Century the Castle was sold to a succession of owners, but was mainly used for grazing, and it fell further into ruin as it was used as a quarry for its stone. It came into the guardianship of English Heritage in 1971.
Today the site is mainly defined by its earthworks, which are still very impressive. Parts of the curtain walls and a substantial part of of the main gate survives. The walls around the Inner Bailey are also impressive, though the main tower is but a shadow of its former self.
The interpretation is modest but well done, and there are foot bridges to make access easier on foot. It's a popular spot for dog walkers, though care should be taken as there are uneven paths, some steep slopes and sheer drops.
There's a footpath from the town (just along from the town gate) and a small car park off Pye Lane. read more