The following describes designs/structures seen on symbolic structures mainly including Tenshu and large-scale Yagura, regardless of whether they were Borogata (lookout tower type keep) or Sotogata (multi-leveled tower type keep).
以下は、望楼型・層塔型の区分に関係なく、主に天守等の象徴的建物や大型の櫓に見られる意匠・構造である。