It guarded the northwest passage into Kyoto for nearly three hundred years.

The castle was built by Oda Nobunaga's vassal Akechi Mitsuhide because he needed a front base to conquer Tanba region.

[3] After the Meiji period revolution, all the remaining structures of the castle were removed or destroyed.

[1] In 2019, Akechi Mistuhide`s statue was built in the castle.

[4] Ten'on-kyō (天恩郷), the administrative headquarters of the Oomoto religion, is located adjacent to the castle.