In 1426 the Edo Clan took over Mito and their retainers took charge of many surrounding castles to be employed as satellite fortifications in defence of the Edo's main base. Mikawajō was one of these. After the fall of Odawarajō to Toyotomi Hideyoshi, Hideyoshi's allies, the Satake Clan, with support from the Ōtomo Clan of Hitachi, attacked the Edo at Mitojō, overwhelming it. Minor outlying fortifications like Mikawajō then fell in rapid succession. It is not entirely clear when Mikawajō was destroyed and abandoned but it was likely during this conflict.
Was rather overgrown and hard to access when I visited
|Pre Edo Period
|Kairakuen Station on the Joban Line; 20 minute walk
|Mito, Ibaraki Prefecture
|36° 22' 2.39" N, 140° 26' 36.96" E
|Added to Jcastle
|Admin Year Visited