Narai is one of the post towns of the Nakasendo, the old golden route between Tokyo (Edo) and Kyoto. The Town remains unchanged as it was in Edo Period.

Narai-juku (奈良井宿, Narai-juku) was the thirty-fourth of the sixty-nine stations of the Nakasendō, as well as the second of eleven stations along the Kisoji.^[1] It is located in the present-day city of Shiojiri, Nagano Prefecture, Japan.