In 2019, I have visited Magome and Tsumago towns in Nakasendō route. And Old Tōkaidō Road Ancient Cedar Avenue in Hakone, Kanagawa. This 2024, I have visited Seki-juku in Tōkaidō road.
What is Tōkaidō road?
Roughly means "eastern sea route," connecting Kyoto (previous capital) Japan and Edo (modern-day Tokyo). [Reference]