Many of the above castles used or constructed Sanju Yagura (Three-tiered turret) and Sumi-Yagura turret instead of Tenshu under the pretext of Gosankai Yagura (Three-storied turret), while there were castles which did not have these (Kagoshima-jo Castle, Hitoyoshi-jo Castle, and so on).
以上の城では御三階櫓という名目で三重櫓や隅櫓を天守の代わりにする、または建てることが多かったが、これらもない城もあった（鹿児島城、人吉城など）。