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The Takayashikidate ruins (高屋敷館遺跡, Takayashikidate iseki) is an archaeological site containing the ruins of a fortified settlement dating to the Heian period in what is now part of the city of Aomori, Aomori Prefecture, in the Tōhoku region of northern Japan. The ruins were designated a National Historic Site in 2012 by the Japanese government.