Tenshu with various forms and shapes were built, but the peak of castle construction was the Battle of Sekigahara, and castles 20 to 30 meters high, like Himeji-jo Castle, were built in western Japan the in those days.
多様な形式・形状の天守が築かれたが、築城のピークは関が原の合戦前後で、特に西日本には姫路城天守のように高さ20メートル前後から30メートル前後のものが築かれたのも特徴である。