The ruins of Hanakura Castle are a city designated historic site. It is said that the Imagawa Clan, lords of Suruga Province, built the castle in order to govern the Hanashi area. The castle is also famous as the site of the final battle of the Hanakura Rebellion, which first broke out in 1536. The castle was near the 296 meter (971 foot) high summit, and the ruins of its main enclosure, second enclosure, and moat still remain. You can follow the hiking course all the way to the summit.