Tower at Fort Williamsburg

The Tower at Fort Williamsburg is a 2-stage octagonal structure built of brick with scribed cement render, set on a mound that offers wide views across the estate and out to sea. It features a crenellated parapet and a square vice tower on the south side. Band courses run above each floor, with the first floor having replaced semicircular headed horned sash windows, while the ground floor includes square-headed openings, including a doorway to the north-west and another leading to the stair tower. Above the main doorway is a stone plaque inscribed 'Williamsbourg Fort'.

The fort itself is roughly square, with redans at each of the four corners, surrounded by ditches and revetment walls. The tower has been much restored and lacks significant individual features. Inside, winding timber stairs lead to a single octagonal chamber on the first floor and continue up to the roof level.