Built in the 14th century, it has a long history. In ancient times, it was a defensive wall. Today, the 900-meter-long wall is preserved with bell tower, city tower and part of it open to the outside world. Here you can climb high and overlook the mountains and lakes. The bell tower on the city wall will ring a minute earlier than the bell tower in other parts of Ryusen by the hour. We just heard the bell ring this morning.