Akita-jo Castle, about 760, about 11th century, Akita gun, (located after abolition of Akita-jo castle, former site of Akita-jo Castle, its Kokufu function relocated in 804
秋田城天平宝字4年（760年）頃11世紀頃秋田郡（秋田城廃絶後に設置）秋田城跡延暦23年（804年）に国府機能は移設。