Nirayama Reverberatory Furnace is the site of a reverberatory furnace located in Izu-no-kuni City, Shizuoka Prefecture. This historic site is a valuable presence that conveys the appearance of the time of its construction to the present day and was designated as a national historic site in 1922. Nirayama Reverberatory Furnace is located in Nakaza Narakita, Izu-no-kuni City and consists of a total of four reverberatory furnaces, with two pairs of 15.6-meter-high double furnaces. In Japan, only two modern reverberatory furnaces remain: Nirayama Reverberatory Furnace and Hagi Reverberatory Furnace in Hagi City, Yamaguchi Prefecture. In addition, Nirayama Reverberatory Furnace is known as the only remaining structure of a reverberatory furnace where actual iron melting was performed worldwide. Nirayama Reverberatory Furnace is registered as a World Heritage Site as a modern industrial heritage site due to its historical value and is part of it.