Hakusan Heisenji temple exerted strong power as the base of Hakusan Worship in Medieval period. Excavational investigation that started in 1989 (the 1st year of the Heisei era) discovered that the area of the precincts of Heisenji temple in Medieval period covered 200 hectares, which is more than ten times as large as it is now. Excavational investigation conducted in fiscal 1990 and 1991 (the 2nd and the 3rd year of the Heisei era) discovered stone paved paths, stone walls, entrances of residences for monks, and so on which is unusual at the nationwide level.