Nirayama Reverberatory Furnaces

The Nirayama Reverberatory Furnaces are a set of four Edo period reverberatory furnaces erected by the Tokugawa shogunate in what is now the Nirayama neighborhood of the city of Izunokuni, Shizuoka in the Tokai region of Japan. The site was designated a National Historic Site in 1922. and was later designed as a component of the Sites of Japan's Meiji Industrial Revolution: Iron and Steel, Shipbuilding and Coal Mining, which received UNESCO World Heritage Site status in 2015.

Source: Wikipedia