In 1571, after the fire attack against Enryaku-ji Temple on Mt. Hiei, the land of Shiga County, Omi Province was given to Mitsuhide AKECHI, and Sakamoto-jo Castle was built by the order of Nobunaga ODA as a defense against the forces of Kyo (the capital) and Enryaku-ji Temple on Mt. Hiei.
1571年、比叡山焼き討ちの後、明智光秀に近江国滋賀郡が与えられ、織田信長の命によって京と比叡山の抑えとして築城した。