I visited Naraijuku in Nagano Prefecture on a hot day in mid-August. Naraijuku is an old historical post-town in Kisoji (Kiso Road) along the Nakasendo, which was one of the main highways in the Edo Era (1603-1867) and connected Kyoto and Edo (old name of Tokyo).
Naraijuku Street is about 1km long, and old wooden houses are beside it. The Japanese Agency of Culture has specified this street as an “area of valuable traditional buildings to be reserved.”