During the Azuchi Momoyama period, Mitsuhide AKECHI built Tanba Kameyama-jo Castle to rule Tanba and developed the castle town in the Kose area, which made way for modern development of Kameoka in recent times.
安土桃山時代に入って明智光秀が丹波統治のため古世地区に丹波亀山城を築き城下町を形成したことによって、亀岡は近代的な発展を遂げる。