Kitayuzawa Onsen (北湯沢温泉)

Kitayuzawa Onsen: Hokkaido’s National Sanctuary for Grand Scale Thermal Wellness

Kitayuzawa Onsen is a destination that redefines the scale of Japanese hot spring resorts. Designated as a “National Hot Spring Health Resort,” it is situated along the dramatic Osarugawa River gorge between Lake Shikotsu and Lake Toya. Known for its massive, high-concept hotels and its commitment to the “Forest Wellness” experience, Kitayuzawa offers an escape into the deep Hokkaido wilderness. Here, you can soak in one of Japan’s largest open-air baths, surrounded by primary forests and the soothing sound of waterfalls, making it a premier choice for those seeking both modern luxury and traditional healing power.

Key Information

The Healing Waters: Volcanic Heat and the “Beauty Spa” Effect

Discovered in 1897, the waters of Kitayuzawa gush forth from the riverbed of the Osarugawa at temperatures ranging from 75°C to 95°C. The primary spring quality is an alkaline simple sulfur spring. Unlike the intense, acidic waters of Noboribetsu, Kitayuzawa’s water is gentle and smooth, making it ideal for those with sensitive skin or for long, leisurely soaks. The high alkalinity acts as a natural cleanser, emulsifying skin oils and washing away old keratin to leave the skin silky and bright—earning it the nickname “Bihaku no Yu” (Whitening Bath). Furthermore, the springs are scientifically proven to have a high “restoration” (antioxidant) effect, which is believed to slow the signs of aging and restore physical vitality.

Top 5 Recommended Ryokans

• Midorinokaze Resort Kitayuzawa (Ultra-Luxury/Scale): The flagship resort of the area, featuring a 500-square-meter open-air bath—the largest in Japan. It offers a unique “Wood Spa” walking course with 20 different aromatic tubs including wine, green tea, and herbal scents.
• Kitayuzawa Mori no Soraniwa (Family/Adventure): A forest-themed resort perfect for families. It features a massive indoor and outdoor pool area called “Doki Doki Water Park” and an outdoor adventure course called “Mori-no-Uta.”
• Horohoro Sanso (Authentic/Pet-Friendly): A more traditional Japanese-style inn that allows guests to stay with their dogs. It features large, rustic rock baths and a focus on Hokkaido’s mountain cuisine.
• Noguchi Collection Relaxation Library Stays: Both Midorinokaze and Soraniwa feature exclusive library floors and “Noguchi Suites” for those seeking a quiet, high-end intellectual retreat.
• Private Lodging HAN (Boutique/Modern): A smaller, more intimate option located a short drive away toward Lake Toya, offering modern suites and personalized service.

Must-Visit Public Baths (Soto-yu)

While Kitayuzawa does not have a central “public bathhouse” street like Kinosaki, the major resorts operate on a “Day Pass” system. For approximately 1,000 to 1,500 yen, visitors can access the incredible bathing complexes of Midorinokaze or Mori no Soraniwa. For those wanting a free experience, there are several public Footbaths (Ashiyu) located along the main road near the visitor centers, where you can soak your feet while watching the mist rise from the Osarugawa River.

Walking Guide & Scenic Spots

A morning walk along the Osarugawa River Promenade is essential to appreciate the canyon’s beauty. Visit the Sangaitaki Falls, one of the most beautiful waterfalls in Hokkaido, where the water cascades in three distinct steps over a wide rock surface. In autumn, this spot is framed by a brilliant tapestry of red and gold maples. For active travelers, a hike up Mt. Horohoro offers a 360-degree view of Lake Shikotsu and Lake Toya. Also nearby is Kinoko Okoku (Mushroom Kingdom), an iconic roadside rest area that serves as a culinary landmark for the region.

Local Gastronomy & Souvenirs

The Otaki area of Date City is famous for its Mushrooms. A visit to Kinoko Okoku is mandatory to try their famous 100-yen mushroom soup and mushroom tempura. For dinner, local ryokans focus on “Farm-to-Table” dining, using ingredients from the nearby Date and Sobetsu areas, known for their high-quality vegetables and fruits. Souvenirs to look for include Hokkaido White Bean sweets, local mushroom preserves, and original skincare products made with Kitayuzawa’s mineral-rich water.

Cultural & Historical Context

The town’s history is tied to the development of Date City by samurai settlers from the Sendai region in the late 19th century. Kitayuzawa developed as a peaceful retreat for these pioneers. Today, the area is a model for Wellness Tourism in Japan, blending the therapeutic power of onsen with “forest bathing” (Shinrin-yoku). The connection between the tectonic activity of the volcanic belt and the lush greenery of the national park is celebrated at local eco-museums and visitor centers.

Practical Travel Tips

Transportation: The most comfortable way to arrive is using the Free Shuttle Bus service provided by the Noguchi Kanko group hotels, which departs daily from Sapporo Station (advance booking is essential). Winter Access: The road between Lake Toya and Lake Shikotsu (Route 453) can be difficult in heavy snow; if driving, ensure you have 4WD. Crowd Management: Midorinokaze is an “adult-oriented” luxury resort, while Mori no Soraniwa is “family-oriented”—choose your accommodation based on the atmosphere you desire.

2025-2026 Latest Updates

The Kitayuzawa Winter Fireworks are scheduled for every night from December 31, 2025, to January 11, 2026, launched from the riverbank to create a stunning contrast with the snow. Furthermore, Midorinokaze has recently updated its Astronomical Observatory, where guests can use high-powered telescopes to observe the clear northern winter skies after their evening soak.

Safety & Manners

In the “Wood Spa” at Midorinokaze, remember that there are 20 different aromatic baths; it is polite to rinse yourself quickly between the more fragrant tubs (like the wine or coffee baths) to avoid mixing scents. When exploring the Osarugawa River, be cautious of slippery rocks near the water’s edge. Finally, always keep a quiet tone in the communal areas, as Kitayuzawa is valued by many as a place for deep meditative relaxation.