It is located in the present-day town of Hakone in Ashigarashimo District, Kanagawa Prefecture, Japan.
At an elevation of 725m, it is the highest post station on the entire Tōkaidō and was even difficult for the bakufu to maintain.
[1] The original Hakone-juku was on the Edo (modern-day Tokyo) side of the Hakone Checkpoint; however, the people living there at the time refused to build a honjin to create a new post station.
As a result, the post town was developed on the side of the checkpoint heading towards Kyoto.
Media related to Hakone-juku at Wikimedia Commons