Shiroishi Castle is a Japanese Castle (which traditionally evolved from wooden stockades of earlier centuries that were built to guard strategic sites) that is made of stone and wood in the flatland-style, and was in use during the Kamakura period, before being rebuit in 1591, and again in 1995.
Shiroishi Castle (, Shiroishi-jo) is a flatland-style Japanese castle in what is now the city of Shiroishi, Miyagi. In 1591, during the late AzuchiMomoyama period, the castle was completely rebuilt by the Gamo clan with stone walls and a donjon, and ruled by the senior retainer Gamo Satonari. After being restored in 1995 using traditional materials and building techniques, the castle is now open to the public. Shiroishi Castle was founded in the Kamakura period, by the Karita clan. Japanese castles (, shiro) were fortresses constructed primarily of wood and stone. They evolved from the wooden stockades of earlier centuries, and came into their best-known form in the 16th century. Castles in Japan were built to guard important or strategic sites, such as ports, river crossings, or crossroads, and almost always incorporated the landscape into their defenses. 
