A tower representing Yokohama, "King" of Kanagawa Prefectural Government, "Queen" of Yokohama Customs, "Jack" of Yokohama Port Opening Memorial Hall. In the early Showa period, when there were no tall buildings yet, sailors of foreign ships called these towers seen from Yokohama Port in a friendly manner, prayed for the safety of the voyage, and entered the port with this tower as a landmark. .. It is said that the wishes will come true if you visit a spot where you can overlook the three towers. Every year, March 10th is called "Three Towers Day" and various events are held.