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Nunney Castle is surrounded by a moat, which was restored in the early part of the 20th century. Originally this would have been far more substantial, with water extending to the castle walls. Accommodation was arranged with a kitchen on the ground floor, where remains of a large fire place and side oven are still visible, and storage facilities in the base of the towers with a well at one end. Servants quarters were on the first floor of the tower, with the Great Hall and Lord's Solar occupying the 2nd and 3rd floors respectively. The upper storeys of the towers would have provided additional accommodation, and a Chapel was located at the top of the southwest tower.
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Little is known of Nunney Castle's history and it appears to have been largely uneventful. The most notable chapter seems to have been during the Civil War when it was besieged by Cromwell's troops, but capitulated within two days. Never designed to withstand cannon, the north wall was soon breached above the entrance, the hole remaining until 1910 when the bulk of the wall to collapsed. This resulted in the great void that is a prominent feature of Nunney Castle today. After the Civil War, Nunney Castle's roof was removed to render it uninhabitable, and so it has remained ever since.