五街道 Edo Five Routes, five routes connect Edo with the outer provinces during the Edo period, for political reason which requiring Daimyo(regional ruler) to travel back-and-forth to Edo(modern day Tokyo) on alternative years with a large retinue under the sankin-kōtai system and needed a well-maintained road with suitable 宿場/post stations for rest and resupply along the route.
Part of Five Highways:
東海道 Tōkaidō road https://en.wikipedia.org/wiki/T%C5%8Dkaid%C5%8D_(road)
甲州街道 Kōshū Kaidō https://en.wikipedia.org/wiki/K%C5%8Dsh%C5%AB_Kaid%C5%8D
奥州街道 Ōshū Kaidō https://en.wikipedia.org/wiki/%C5%8Csh%C5%AB_Kaid%C5%8D
中山道 Nakasendō https://en.wikipedia.org/wiki/Nakasend%C5%8D
日光街道 Nikkō Kaidō https://en.wikipedia.org/wiki/Nikk%C5%8D_Kaid%C5%8D
https://en.wikipedia.org/wiki/Edo_Five_Routes
会津西街道 Aizu Nishi Kaidō, a 130km, pre-modern highway constructed in Edo period, connect modern day 栃木県(Tochigi-Ken Prefecture) with 会津若松城(Aizu-Wakamatsu Castle) in 福島県 (Fukushima Prefecture)
Post Stations: 大内宿
https://en.wikipedia.org/wiki/Aizu_Nishi_Kaid%C5%8D https://en.wikipedia.org/wiki/%C5%8Cuchi-juku
妻籠宿 Tsumago-juku https://en.wikipedia.org/wiki/Tsumago-juku
宿場/Post station: https://en.wikipedia.org/wiki/Shukuba
https://en.wikipedia.org/wiki/69_Stations_of_the_Nakasend%C5%8D The 69 Stations of the Nakasendō
Meandering leads to perfection 