Mausoleum (Important Cultural Property): This square hall, topped by hogyo-zukuri hiwadabuki, a pyramidal roof covered with Japanese cypress bark shingles, stands on a slightly elevated plot to the west of the Kaisan-do hall.
霊屋（重要文化財）－開山堂の西方、一段高くなった敷地に建つ、宝形造檜皮葺きの堂。