This is said to be the place where a peasant named Jinbe discovered under a big stone a gold seal, which later became the national treasure.

At the gate of the park overlooking Yara cape across the shore is a monument of the discovery of the gold seal, and inside the park is a poetic monument of Guo Moruo, Chinese historian and poet who had a deep tie with Fukuoka, and also a stone tablet representing an ancient map of the surrouding area. The scenery surrounding this park gives you an impression that it may not have changed even a bit since the ancient time of Himiko(shaman queen).