01 / Raised-river tunnels
The old Tōkaidō passes undera raised river, through stone.

The Ōsuna and Yuratani rivers are tenjōgawa, rivers whose beds lie higher than the land around them, and the old Tōkaidō road passes under them through stone tunnels. The Ōsuna tunnel dates from Meiji 17 (1884) and the Yuratani tunnel from Meiji 19 (1886); both are still used as local roads. The city's list of undesignated properties calls the Ōsuna tunnel the first modern tunnel in the prefecture, and a city-designated Kōbō cedar stands on the embankment.
- Meiji 17 (1884)
- Meiji 19 (1886)
- City-designated Kōbō cedar