It comprised a main blockhouse attached to an octagonal gun room, overlooking the sea. A wine cellar and gun room are in the basement. Originally there were eleven rooms, including the eliminated "gun room" and cellar. Running around the front of the keep is the gun room. Both the gun room and the main block were probably protected by parapets. He added a library, gun room, billiards room, "Justice Room" and many other major changes. Well-furnished Gun Room for Cadets and Under Training Officers.