Oiwakejuku Post is the 20th post of 69 on the Nakasendo Way from Tokyo to Kyoto. Kitaguni-kaido Way and Nakasendo Way separate here, which is the reason this area started to be called Oiwake (meaning a fork in the road). The sightseeing spots in this area include historic hotels, Asama Shrine and Hori Tatsuo Museum of Literature.