Shigaraki no miya is the detached palace in Koga gun (county side), Omi Province (present-day Shigaraki-cho, Koga City, Shiga Prefecture) that was operated by Emperor Shomu during the Nara period.
紫香楽宮／信楽宮（しがらきのみや）は、奈良時代、聖武天皇が近江国甲賀郡（現在の滋賀県甲賀市信楽町）に営んだ離宮。