Some castles had yagura kuruwa, mizute-kuruwa (a small lot in a castle, including a well or reservoir), tenshu-kuruwa, nishi no maru (a castle compound to the west of the main compound) (retreat for daimyo's old age) and so on.
城によっては、櫓曲輪・水手曲輪・天守曲輪・西の丸（大名の隠居所）などが設けられることもあった。