[1] In the late Edo period, the Tokugawa shogunate was increasingly alarmed by incursions of foreign ships into Japanese territorial waters, fearing that the kurofune warships of the United States or other Western powers would attempt to end Japan's self-imposed national isolation policy by force, or attempt an invasion of Japan.
The daimyō of Tottori Domain, Ikeda Yoshinori was the fifth son of Tokugawa Nariaki of Mito Domain and at the time was a hard-line supporter of the sonnō jōi movement as promoted by the Mitogaku school of politics, and also an advocate of military modernization along western lines.
This was the first coastal gun battery built by Tottori Domain, and was influenced by French military design.
The Sakai Daiba ruins (境台場跡) are located in the Hanamachi neighbourhood of the city of Sakaiminato, Tottori, and were completed in 1864.
Currently, the site is maintained as Uradome Odaiba Park, and can be reached by bus from Iwami Station on the JR San'in Main Line.
Much of the site was destroyed by the construction of Japan National Route 9 in 1958; however, excavations in 2013 and 2014 found that the semi-circular portion of the fortification survived.