Unazuki Onsen — relief & relaxation | Compare & book 7 inns

Overview

Unazuki Onsen, located in eastern Toyama Prefecture, serves as the entrance to the Kurobe Gorge, one of Japan's most impressive V-shaped valleys. Its history is relatively recent, having opened in 1923 in conjunction with the development of hydroelectric power on the Kurobe River. The onsen town features ryokans and hotels lining the gorge's cliffs, offering spectacular seasonal views from guest rooms and open-air baths.

The most distinctive feature of this onsen is that its water is piped from Kurogane Onsen, located about 7 kilometers upstream. The source is extremely hot, over 90°C, and the water is colorless and transparent. Its clarity is said to be the best in Japan, and its gentle, weakly alkaline quality provides visitors with deep relaxation and revitalization. As the starting point for the Kurobe Gorge Railway (Torokko Train), it offers the perfect blend of hot springs and magnificent nature.

Primary Spring Qualities and Benefits

The water at Unazuki Onsen is a weakly alkaline simple spring. It is non-irritating and safe for everyone, from children to the elderly. The alkaline components soften the skin's old keratin, creating a smooth texture, earning it the nickname "bijin-no-yu" (beauty-enhancing hot spring).

• Cuts
• Poor circulationBathing in the hot water helps to dilate peripheral blood vessels, promoting better blood flow to the extremities. The simple, gentle quality of the water allows for a relaxing soak, which can further support the improvement of circulatory function.
• Dry skinUnazuki's weakly alkaline water is known for its skin-beautifying properties. The water's composition may help to soften and remove old keratin from the skin's surface, leading to a smoother and more hydrated feeling.
• Autonomic instability
• Insomnia

Water Characteristics and Best Season to Visit

The hot spring water at Unazuki is colorless and transparent. With a source temperature exceeding 90°C, it is cooled to a comfortable level at each facility. It has a soft feel on the skin, making it suitable for long soaks. Leveraging its abundant flow, many establishments feature free-flowing (kakenagashi) baths.

The best times to visit are spring and autumn when the nature of the Kurobe Gorge is at its most vibrant. In spring, the Kurobe River swells with snowmelt amidst fresh greenery, while in autumn, the entire gorge is painted with fiery fall colors. The winter snowscape is magical, but be aware that the Torokko Train operates on a limited schedule.

Access

Nearby Sightseeing & Local Cuisine

• Kurobe Gorge Railway (Torokko Train): A popular tourist train that runs through the spectacular gorge.
• Yamabiko Bridge: A symbol of the onsen town and a great spot to photograph the Torokko Train crossing.
• Unazuki Dam: A dam within walking distance of the town, with an adjacent museum called Damu-Kone.
• Selene Museum of Art: An art museum featuring works themed on the nature of Kurobe Gorge.
• Footbath 'Omokage': Located in front of the station, offering a casual way to enjoy Unazuki's waters.
• White Shrimp (Shiroebi): Known as the 'jewels of Toyama Bay,' these shrimp have a delicate, sweet flavor.
• Firefly Squid (Hotaruika): A mystical delicacy from Toyama Bay, in season during spring.
• Trout Sushi (Masu-zushi): A famous Toyama specialty bento box, with a perfect balance of trout and vinegared rice.