Rikkan Castle (Rikkan) was a Japanese mountain castle located in Hirafuku, Sayo-gun, Harima Province (Hirafuku, Sayo-cho, Sayo-gun, Hyogo Prefecture). It is designated as a national historic site. Hirafuku is a famous spot for morning mist, and in the early Edo period, it had a castle keep, and its appearance floating above the mist was so magnificent that it was also called Kumotsuki Castle. We only offer Goshuin (castle stamps). In the Nanboku-cho period, Bessho Atsunori of the Akamatsu clan built a mountain castle on Mt. Rikkan in 1349 (the 5th year of the Jo-wa era), the year after Kusunoki Masatsura died in battle at Shijonawate. Since then, it served as a base for the Akamatsu clan for about two hundred years. After the Battle of Sekigahara in 1600 (the 5th year of the Keicho era), Yukiyuki Ikeda, the nephew of Terumasa Ikeda, the lord of Harima with 520,000 koku, became the lord of Hirafuku with 23,300 koku. Yukiyuki spent five years constructing a grand castle on Mt. Rikkan, and he arranged the lord's residence and samurai residences at the foot of the mountain, and also began constructing a castle town, including setting up a town for merchants along the街道 (kaido, a main road). The three-story tower on Mt. Rikkan was called "Kumotsuki Castle" because of its imposing appearance, as if piercing the clouds. If you climb to the summit (373m above sea level), the stone walls of the Honmaru (main enclosure), Ninomaru (second enclosure), and Osaka-maru still evoke the appearance of the past.