Shigisan Castle Ruins
Located in the southern part of the Ikoma Mountain range, which runs north to south in the western area of Heguri, this mountain castle centers around Mt. Shigi and Otake, with an elevation of 437 meters.
It spans approximately 550 meters east to west and 700 meters north to south, making it one of Nara Prefecture's largest medieval mountain castles.
One theory attributes its construction to Kusunoki Masashige.
During the Warring States period, it was used as a stronghold by Matsunaga Hisahide, known for his rivalry with Oda Nobunaga, for controlling the Yamato region.
Following defeat by Oda's forces and Hisahide's suicide after breaking the renowned tea utensil, the Hira Kumo, the castle fell into ruin.