Zao Onsen: One of Japan's Oldest Hot Springs Surrounded by Seasonal Beauty
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Zao Onsen
Located halfway up the Zao Mountain Range in Yamagata Prefecture at an elevation of about 900 meters, Zao Onsen is one of Japan’s oldest hot spring resorts, with a history spanning more than 1,900 years. Its traditional hot spring town is home to ryokan inns, public bathhouses, and footbaths, making it easy to enjoy a relaxing soak whether you’re staying overnight or visiting for the day.
The waters of Zao Onsen are strongly acidic sulfur springs created by the volcanic activity of Mt. Zao. They are known for their high acidity and distinctive sulfur aroma. The waters are said to promote blood circulation and have cleansing properties, earning Zao Onsen the nickname “Bijin-no-Yu” (Beauty Bath).
When visiting Zao, don’t miss its spectacular scenery, which changes with the seasons. Take the ropeway for breathtaking views of the majestic mountains from above. In autumn, the mountains are ablaze with vibrant red and golden foliage, while winter brings the spectacular “Snow Monsters”—giant snow-covered trees formed by ice and snow. From spring through summer, the refreshing highland scenery provides an ideal setting for trekking. Zao Onsen reveals a different side of its beauty in every season. Experience the unique combination of a historic hot spring resort and magnificent natural scenery that makes this destination so special.
Public bathhouses, footbaths, and day-use hot spring facilities are all within walking distance. Explore the different hot springs and discover the unique charm of each one.
For skiing and snowboarding enthusiasts, Zao Onsen Ski Resort
The autumn foliage is usually at its best in mid-October.
The Snow Monsters are usually at their best from January to February, and you can enjoy spectacular views of the vast snow-covered forest from the ropeway.
For skiing and snowboarding enthusiasts, Zao Onsen Ski Resort offers the unique experience of skiing among the Snow Monsters.
From the Editor
While exploring the hot spring town, be sure to try tama konnyaku, one of Yamagata’s favorite local foods. It’s the perfect snack when you’re feeling a little hungry, and its savory soy sauce flavor is delightfully addictive.
Zao Onsen Tourism Association
023-694-9328
| Access | Tokyo Sta. → 2 hr 30 min by Yamagata Shinkansen → Yamagata Sta. → 40 min by bus Haneda Airport → 1 hr by air → Yamagata Airport → 1 hr by bus |
| URL | https://zaomountainresort.com/ |
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The information herein is as of
August 2026
Writer
Sana
I am Sana, born in Tokyo. I love travelling, dancing, drinking, very spicy food, sauna, thrill rides at amusement parks, camera, and monozukuri(handcraft), which tells me that I am curious about many things. There are more than 1,500 spots/places on my travel bucket list. I am going to provide information while enjoying myself!
