families to remain in Edo during their absence. The ikkoku ichijyō rei (一国一城令), allowed each daimyo's han to retain only one fortification, at the daimyo's...

in 1260 AD. It is deserted castle by Decree of One Castle Per Province(一国一城令) in 1615 AD. Old Naganuma was formed as a result of the enforcement of town...

after a 1615 (Genna gannen) decree mandating only one castle per province (一国一城令). The castle is located on Hidakami-Yama mountain, a peninsula-like hill...