At the end of the Heian Period, Taro Mitsuhiro Ishikuro, the man who ruled over the Tonami Region, built Fukumitsu Castle. In 1481, a number of highly religious individuals who were gathered in Inami around Zuisen Temple attacked the castle, defeated the rulers, and burned it to the ground. In 1868, Kanazawa tea ceremony master Sougi Kuwabara established the Seikaen in the area of the castle ruins. In 1959, its cultural value was recognized, and it became a designated culturally significant property. Today it is a park that sometimes holds tea parties and serves as a public place for citizens to use at their leisure.