
Natural SceneryWaterfront
Atera Valley
Experience the mystical beauty of emerald green waters and ancient forests in the heart of the Kiso Road heritage site.NaganoNatural Scenery
Explore this spot

Guide7 min read
Atera Valley is a vital part of the "Kiso Road" Japan Heritage site, located in Ohkuwa Village, Nagano Prefecture. The valley's most striking feature is its crystal-clear, emerald green river.
What makes it special
Emerald Green RiverKiso ForestBigan-sui LegendNatural LandscapesKiso Road Heritage
About Atera Valley
- Emerald Green Waters: Experience the breathtaking clarity of the river up close.
- Natural Formations: Witness the dynamic beauty of the Hinoki cypress forests and steep rock walls.
- Legendary Spring: Discover the "Bigan-sui" spring, famous for its legendary beauty-enhancing properties.
- Seasonal Beauty: Visit during autumn for stunning foliage or spring for fresh greenery.
Photo gallery
All photosWeather forecast
Tue
8/4
27°/21°
100%
Wed
8/5
30°/18°
39%
Thu
8/6
29°/21°
100%
Fri
8/7
28°/19°
100%
Sat
8/8
26°/18°
100%
Sun
8/9
26°/18°
84%
Mon
8/10
22°/19°
80%

