Preston Castle was a motte and bailey castle in the Ashton district of Preston, Lancashire. It is also referred to as Tulketh. The site became disused by 1123 but the mound was not levelled until 1855. The motte had a diameter of about 125 feet at the base and stood at a projecting cliff. A semi-circular ditch defended the exposed side of the fortification, suggesting a crescent shaped bailey.