Dunster Castle motte, or Upper Ward, and an area below shaped to form the bailey, or Lower Ward. Somerset became more stable in the aftermath of the post-invasion period and the unsuccessful 1068 rebellion against Norman rule. It was common in the period for the Normans to build religious houses to accompany major castles, and accordingly William de Mohun endowed a Benedictine priory at Dunster in 1090, along with its parent abbey at Bath. The River Avill was important for trade; the region around Dunster was rich with fisheries and vineyards, and Dunster Castle prospered. Stone fortifications were built on the site
Dunster railway station of Dunster, which contains many historic buildings. The stone station building and platform is on the south side-west of the line, its imposing design reflects its former status as the station for distinguished visitors to Dunster Castle. It is a Grade II listed building. A goods shed was provided on the opposite side of the line and is now used as a workshop for the civil engineering team. The Railway Printing Company is based in the old parcels office within the main building. From here they supply tickets printed on their old Edmondson railway ticket press to the WSR and