Ouchi-juku is a small isolated village nestled in the mountains of southwestern Fukushima Prefecture. This village was one of the post towns established under the post station system during the Edo Period and its well-preserved streets prompted its designation as an Important Preservation District for a Group of Historic Buildings in 1981. The road that used to run through this village was called the Shimotsuke Kaido Route or the Aizu Nishi Kaido Route, and was an important road connecting Aizuwakamatsu and Imaichi, a post town on the Nikko Kaido Route. This road was frequented by many travelers as well as by the processions of feudal lords who had to travel to and from Edo periodically because of the Sankin-kōtai system devised by the Tokugawa Shogunate. They rested and relieved their fatigue from traveling in this village. The streetscape makes the visitor feel as if they have slipped back through time to the Edo Period, giving a reminder of things that people today have almost forgotten.