群馬県 · Kanto Region
Gunma Hidden Gems
Onsen country — more hot-spring water flows here than almost anywhere in Japan, set against mountains and highland moors.
3 spots
Climate & Best Season
Hot, thundery summers on the plain; cold, snowy winters in the highlands. Onsen towns are best in winter, hiking in autumn.
Famous For (Food)
- Mizusawa udon
- Konnyaku
- Yakimanju
- Shimonita negi
Signature Sights
- Kusatsu Onsen
- Ikaho Onsen stone steps
- Mt. Haruna & Mt. Akagi
- Tomioka Silk Mill (UNESCO)
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Gunma· Katashina
Oze National Park — High-Altitude Wetland Hiking
Oze National Park sits at 1,400-1,600 meters elevation on the Gunma-Fukushima-Niigata border, a high wetland plateau whe…
Ozenational parkwetland+2
Updated Jul 2026
Gunma· Takasaki
Mt. Haruna & Lake Haruna — Volcanic Crater Lake
Mt. Haruna (榛名山, 1,449m) is a dormant volcano with a crater lake (Lake Haruna, 榛名湖) at 1,100m elevation, surrounded by v…
Mt. Harunacrater lakeropeway+2
Updated Jul 2026
Gunma· Takasaki
Akagi Shrine — Mystical Forest Sanctuary
Akagi Shrine (赤城神社) sits on the shore of Lake Onuma (大沼, 1,350m elevation) in the caldera of Mt. Akagi (赤城山, 1,828m), a…
Akagi Shrinelakevolcano+2
Updated Jul 2026