Iwami Ginzan Silver Mine was first developed in 1526, but reached its peak production in the early 17th century when it was producing a third of the world’s then silver production. Iwami Ginzan Silver Mine ceased production in the early 20th century. Prior to 1600 the mine was fought over several times until Tokugawa Shogunate gained control. In the mid 17th century the mine was then protected by fences, pine trees and the Yamabuki Castle. Iwami Ginzan Silver Mine was also under threat from outside of Japan as it is on the western coastline of Honshu in today’s city of Oda in Shimane Prefecture. Iwami Ginzan Silver Mine is a UNESCO World Heritage Site and forms part of the “Iwami Ginzan Silver Mine and its Cultural Landscape” listing.