01 / Oma Port Seawalls
The colorful stonework uses stoneproduced in local Aikawa.

Oma Port was built in the mid-Meiji era to carry ore, coal and other materials in and out of the Sado mine. The prefecture writes that seawalls made with the tataki method, which combines stonework with tataki, a kneaded mix of slaked lime and soil, remain. The Oma district is part of the area added to the national Historic Site of the Sado Gold and Silver Mines.
- Port built in the mid-Meiji era
- Tataki-method seawalls
- Added area of a national Historic Site

