, also known as , was a castle in Kōriyama, Fukushima Prefecture, Japan. It was the seat of the Kōriyama clan (part of the Itō clan, which was a branch of the Date clan).
History Built in Mutsu Province, the exact date Kōriyama Castle was completed is unclear. It was the seat of the Kōriyama clan (part of the Itō clan, which was a branch of the Date clan). The castle is mentioned in accounts of the Kōriyama Campaign, which took place between February and July in 1588.
Site The location of the castle was disputed for many years, with theories placing the castle near present-day Kōriyama Station or on the western plateau of the northwest bank of the former Yaoto River at a location called . The Nishi-no-Uchi location had less support due its distance from the center of town and the fact that it couldn't "overlook the town" from its location. A study conducted between April and May 2022 confirmed the site near Kōriyama Station after finding parts of the ruins while excavating prior to building new community facilities.
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