What is Kusatsu Onsen? Discover Japan’s Famous Hot Spring
Kusatsu Onsen is one of Japan’s most celebrated hot spring resorts, known for both its scale and history. With the largest natural hot water output in the country—over 30,000 liters per minute—it constantly supplies fresh, mineral-rich water to the town’s many baths.
It is also recognized as one of Japan’s “Three Great Hot Springs” (Nihon Sanmeisen), alongside Arima Onsen in Hyogo and Gero Onsen in Gifu. For centuries, Kusatsu has been admired not only for the sheer abundance of its hot water but also for the healing qualities of its highly acidic springs, which are said to relieve fatigue, improve circulation, and promote healthy skin.
Tattoo-friendly private onsens
West Riverside open-air bath
Photo courtesy of Gunma Tourism Photo Library
Relax in the West Riverside open-air bath, one of Japan’s largest at 500 m² for men and women, and enjoy breathtaking 360-degree views of the changing seasons from fresh green landscapes to autumn foliage and snowy winters. It’s the perfect spot to immerse yourself in the healing warmth of the hot spring and forget the passage of time.
Goza-no-yu
Photo courtesy of Gunma Tourism Photo Library
Throughout its long history, Kusatsu Onsen has thrived thanks to its abundant, high-quality hot springs.
Nestled near the town’s iconic Yubatake, Goza-no-Yu has been lovingly rebuilt as a replica of an Edo–Meiji era winter residence. Its traditional wooden structure, cedar “Tonton-roof,” and textured stucco walls immerse visitors in the charm of old Kusatsu, letting you feel the atmosphere of a bygone era while enjoying the warmth of the hot springs.
Things to Do and See in Kusatsu Onsen
Yumomi and traditional dance shows
Photo courtesy of Gunma Tourism Photo Library
Yumomi is a unique tradition in Kusatsu Onsen, where hot spring water is cooled to a safe temperature by stirring it with large wooden paddles while singing folk songs. Visitors can watch this fascinating process and even try it themselves. Often, Yumomi demonstrations are combined with traditional Japanese dance performances, offering a lively cultural experience that showcases local music, costumes, and customs.
How to Get to Kusatsu Onsen: Complete Access Guide
Kusatsu Onsen is easily accessible from Tokyo, whether you prefer trains, buses, or driving. Here’s a guide to help you plan your trip.
1. Train + Bus (Comfortable and Scenic)
From Tokyo Station, take the Shinkansen (Hokuriku or Joetsu line) to Takasaki Station about 1 to 1.5 hours.
At Takasaki, transfer to the JR Agatsuma Line and get off at Naganohara-Kusatsuguchi Station (approx. 1 hour).
From there, a local bus will take you directly to Kusatsu Onsen in about 25 minutes.
2. Direct Highway Bus (Convenient Option)
Several companies operate direct buses from Tokyo (Shinjuku, Ikebukuro, or Tokyo Station) to Kusatsu Onsen.
The journey takes around 4 to 4.5 hours. Booking in advance is recommended, especially during autumn foliage season and winter holidays.
3. By Car (Flexible and Scenic)
Drive via the Kan-Etsu Expressway toward Shibukawa Ikaho IC, then follow local roads to Kusatsu Onsen.
Travel time is approximately 3.5–4 hours, depending on traffic and weather.
Note: In winter, roads may be snowy, so carry snow chains if needed.
💡 Travel Tips
For a comfortable, scenic journey, the Shinkansen + bus route is ideal.
For a direct, hassle-free option, consider the highway bus.
Winter travelers should always check weather and road conditions before driving.
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