Shimoina

Shimoina occupies the southern part of the Ina valley, where the Tenryū River runs between the mountains of Shinano. Iida Castle stood on a terrace above the river, commanding a town and its surrounding lands. Under the Tokugawa shogunate the castle became the seat of the Iida domain. The Hori family took possession in 1672 and held it for the remainder of the period of warrior government.