Introduction
Tucked away in the lush mountains of Gunma Prefecture, Shima Onsen is one of Japan’s oldest and most charming hot spring towns. Less known to foreign tourists but deeply loved by locals, this secluded retreat offers a perfect blend of nature, history, and traditional Japanese hospitality.
Highlights of the Onsen Town
History & Overview
The name “Shima” (四万) means “forty thousand,” reflecting the belief that its waters cure 40,000 illnesses. Revered for over 1,000 years, Shima Onsen is said to have inspired Studio Ghibli’s Spirited Away.
Recommended Ryokan
- Sekizenkan: Built in 1691. Japan’s oldest wooden bathhouse. Famous red bridge and architecture. View on Booking.com
- Shima Grand Hotel: Outdoor baths with mountain views and exquisite meals.
- Kashiwaya Ryokan: Private open-air baths, vegan-friendly, English website available.
Local Food & Souvenirs
Try warm Shima Onsen manju and browse local sake, crafts, or hot spring skincare products.
Things to Do Nearby
- Okushimako Lake: Brilliant turquoise water views.
- Shima Blue Gorge: Clear blue river and waterfalls.
- Yakushido Temple: Hidden spiritual spot in the forest.
- Public foot baths (Ashiyu): Free and relaxing.
Access & Travel Tips
From Tokyo: JR Limited Express Kusatsu from Ueno to Nakanojo (~2.5 hours), then bus (~40 minutes) to Shima Onsen.
Tips: Some ryokan offer free pickup. Limited English signage, but very welcoming locals. Best in autumn, winter, or summer.
Summary & Recommendation
If you want to escape tourist crowds and discover a timeless, serene side of Japan, Shima Onsen is your perfect retreat.