Dunster Working Watermill Dunster Working Watermill Dunster Working Watermill (also known as Castle Mill) is a restored 18th century watermill, situated on the River Avill, close to Gallox Bridge, in the grounds of Dunster Castle in Dunster, Somerset, England. It is a Grade II* listed building. The mill stands on a site where a mill was first recorded in the Domesday Book, but the present building was constructed around 1780. It closed in 1962 but was restored in 1979 and is still used to grind flour. The equipment is powered by two overshot wheels. It is owned and run by the National Trust.
Dunster to the castle were undertaken by Henry Fownes Luttrell who had acquired it through marriage to Margaret Fownes-Luttrell in 1747. Following the death of Alexander Luttrell in 1944, the family was unable to afford the death duties on his estate. The castle and surrounding lands were sold off to a property firm, the family continuing to live in the castle as tenants. The Luttrells bought back the castle in 1954, but in 1976 Colonel Walter Luttrell gave Dunster Castle and most of its contents to the National Trust, which operates it as a tourist attraction. It is a Grade I