Abstract
In Spring 1863, the Tokugawa Shogunate projected to construct the Sekihoto (the stone fortress) at Cape Wada of Hyogo, and completed in about the end of 1866. We have not discussed much that either the construction of the Sekihoto introduced Western technique or it depended on Japanese troditional technique. In this report, I mainly examine the method and the construction from the record about the Sekihoto, and examine further the technique in the time when the Sekihoto was constructed