The most prominent remaining feature is the gatehouse tower, which still stands to almost its full height; a window, and floor joist holes are clearly visible. Beyond it are the foundations of what is believed to have been the living quarters and a guardhouse. The original gatehouse appears to have converted into a single tower at some point in the 12th century; another 3 metres were added to its height, while the entrances were blocked up. This coincides with an increased threat during the reign of John.