When the Toyotomi government began falling off, Ieyasu TOKUGAWA and territorial lords started to construct large-scale, decorative Tenshu, including Tokugawa Nagoya-jo Castle and Himeji-jo Castle, which surpassed Toyotomi Osaka-jo Castle.
豊臣政権が衰退し始めると徳川家康の下、徳川名古屋城を始めに諸大名が姫路城などの豊臣大坂城を超える大規模で装飾的な天守を造営していった。