After the gorgeous Tenshu of Osaka-jo Castle and Fushimi-jo Castle were constructed in succession by Hideyoshi TOYOTOMI, Daimyo (feudal lord) in various places imitated this and built high-rise Tenshu in their own castles.
豊臣秀吉により大坂城・伏見城と相次いで豪華な天守が造営されると、それを手本に各地の大名が自身の城に高層の天守を造営させた。