Pinsley Motte is probably a medieval earthwork motte and bailey fortress. Within the north-east angle of a quadrangular enclosure, is a circular mound encased by a ditch. A modern road runs south-east to north-west, cutting diagonally across the enclosure and west of the road all features have been levelled by ploughing. To the east, digging and chalk pits have mutilated the remains but to the north of the motte, the enclosure remains intact. Here is a large bank and ditch and opposite the centre of the low motte is possibly the original entrance but the area is heavily overgrown. A mile north is Place Wood Ringwork and 3 miles south-west is Portchester Castle.