A historic legacy: Yagi Castle Ruins, a National Historic Site
Designated as a National Historic Site in 1997, the Yagi Castle Ruins comprise a group of castle and residence sites connected to the Yagi clan, a leading samurai family in the Tajima region during the medieval period.
They span roughly 400 years of history, from the Kamakura period through the Sengoku and Toyotomi periods.
At the foot of the mountain are the Tonoyashiki Residence Site, believed to be the site of the clan’s manor from the Kamakura period; the Yagi Dojo earthen fort, which preserves the structure of a Nanbokucho-period castle; and the Yagi Castle remains themselves, which feature high stone walls built in the Toyotomi period.
In particular, the Yagi Castle ruins on the mountaintop are the remains of a large mountain castle: the main bailey was built on a 325-meter-high summit, the fortifications extend for about 300 meters, and stone walls run for a total length of around 100 meters.
