Okukinu Onsen-go — relief & relaxation | Compare & book inns

Overview

Located at the headwaters of the Kinu River, Okukinu Onsen-go has long been a cherished destination for therapeutic bathing. To preserve its rich natural environment, the area beyond the Meotobuchi parking lot is closed to general traffic. This has earned it the name "Kanto's last hidden hot spring," with its tranquility and untouched nature being its greatest charms.

This secluded paradise is accessible only via inn-operated shuttle buses or a scenic 90-minute hike. The trail offers beautiful gorge views and passes through a virgin beech forest, providing a refreshing experience for both mind and body. The area is home to four distinct inns—Kaniyu, Haccho-no-yu, Nikkōzawa Onsen, and Teshirosawa Onsen—each boasting a variety of its own private hot spring sources. The opportunity to easily experience balneotherapy with different water qualities by onsen-hopping is a unique pleasure of Okukinu.

Key Spring Types and Benefits

Okukinu Onsen-go is so rich in variety it's sometimes called an "onsen department store." The most representative type is the sulfur spring, characterized by its unique aroma and milky-white water. Known as "waters for beautiful skin," they are said to help exfoliate old skin cells and prevent blemishes, which may lead to silky skin. The clear, gentle simple thermal springs are low in irritants and are expected to promote deep relaxation.

• atopic dermatitisThe sulfur springs common in this area are traditionally said to be beneficial for various skin troubles. Their properties may help to gently soothe the skin and manage the chronic inflammation characteristic of this condition.
• chronic eczemaFor persistent skin inflammation like chronic eczema, the area's sulfur springs are considered beneficial. Bathing in these waters may help to reduce irritation and improve overall skin health by promoting a calming effect.
• diabetes
• autonomic instability
• insomnia
• sensitivity to cold

Water Characteristics and Best Seasons

The four inns are said to have a total of over 40 spring sources, providing an incredibly abundant supply of water. Most baths feature "gensen kakenagashi," meaning the water flows directly from the source without any added water, heating, or circulation, allowing you to experience the pure benefits of fresh onsen water. Some inns even pipe in water from multiple sources, allowing guests to enjoy different spring qualities at a single location.

The best times to visit are from May to June for the dazzling fresh greenery, October for the vibrant autumn colors, and January to February for the magical experience of bathing in an open-air bath surrounded by a winter wonderland. No matter the season, you can spend special moments away from the city's hustle and bustle, feeling at one with nature.

Access

Nearby Sightseeing & Local Cuisine

• Kinugawa River Boat Ride
• Nikko Toshogu Shrine
• Kegon Falls & Lake Chuzenji
• Ryuo-kyo Gorge
• Yuba (tofu skin) cuisine
• Salt-grilled rainbow trout
• Handmade soba noodles