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Osaka Castle Wall Stone Quarry Remains

Japan Heritage
The Tenguiwa, Tenguiwa-iso, Minamitani, Tofuishi, Kamesaki, and Hachinin-ishi quarry sites.
Four hundred years ago, when the Tokugawa shogunate was rebuilding Osaka Castle, the daimyos of several domains opened quarries in the Bisan Islands to deliver huge stones to construct magnificent castle walls. The flavor of that time is still strongly in evidence at the quarries opened by the Kuroda daimyo in the Iwagatani district. With a total of more than 1600 stones still visible, these sites are important showcases for traditional masonry techniques.
Japan Heritage