A curve (at the upper end of the photo) of the recurved principal rafter is used to decorate a gable roof, reminding people of shrines and temples, or the tenshu (keep or tower) of a castle is a detail that proudly denotes religion and authority while having a symbolic feature showing the entrance leading to the Pure Land of Amitabha.
神社仏閣や城郭の天守を想起させる切り妻の屋根飾りに合掌組を反曲させた曲線（写真建物の上端部）は、宗教性や権威を誇るディテールであり、また、極楽浄土へいざなう入り口を示すシンボリックな側面を合わせ持っている。