The incomplete remains of Ninsho's tomb tower, a gorinto, contains what is thought to be the tomb of Eison's disciple Ninsho, and a urn designated as an Important Cultural Property was discovered during the excavation research project by the Archaeological Institute of Kashihara, Nara Prefecture.
五輪塔残欠（忍性墓塔）－叡尊の弟子・忍性の墓とされるもので、奈良県立橿原考古学研究所の発掘調査により重要文化財指定の骨蔵器（舎利瓶）が発見された。