Until the Meiji Restoration, Ryoko-in Temple served as an ancestral temple of the Takamatsu-no-Miya and Arisugawa-no-Miya families and has the graves of successive family heads from the first generation Imperial Prince Yoshihito Takamatsu-no-Miya to the eighth generation Imperial Prince Tsunahito Arisugawa-no-Miya.
龍光院は明治維新まで高松宮・有栖川宮家の菩提寺であり、初代・高松宮好仁親王から第8代・有栖川宮韶仁親王までの歴代墓所がある。