Iwami Ginzan Silver Mine, located in Ota City, Shimane Prefecture, was registered as a World Heritage site in 2007. It is Japan's largest silver mine, reaching its peak output in the 16th and 17th centuries, from the late Warring States Period to the early Edo Period. It is believed that about one third of the world's silver was produced here during this time. Iwami Ginzan's silver was distributed through trade with China, but later began to be traded with European countries, influencing not only Asia but also global economic and cultural exchange. Iwami Ginzan is characterized by the abundance of relics related to silver production, such as the remains of tunnels, which have been left in good condition. Not far from Iwami Ginzan is the port town of Yunotsu. At that time, this was the main port for trade with China and Korea. The town is characterized by its hot springs and retro landscape.