Iizaka Onsen
飯坂温泉
Iizaka Onsen
Simple · Tohoku
Hotter than 48% of Japan springs (n=122).
More acidic than 79% of Japan springs (n=121).
Mineral profile
Bar width reflects listing order, not measured concentration.
Suitability
At a glance
Getting there
Easy — under 1km from a station
Cost
Low
About this spring
Iizaka Onsen sits on the banks of the Surikami River, roughly 10 kilometers northwest of Fukushima city. The resort town holds more than 40 ryokan alongside nine public baths. Its oldest communal bathhouse, Sabakoyu, has operated since at least the 1600s. The Edo-period poet Matsuo Basho stopped here and wrote of the springs.
Highlights
History
According to legend, Prince Yamato Takeru, one of ancient Japan's most celebrated heroes, bathed at these springs and regained his health.
Matsuo Basho came to the Sabakoyu bathhouse in 1689 as part of his celebrated trek through the Tohoku region, a journey he documented in the travel diary Oku no Hosomichi. That visit secured Iizaka's standing in Japanese literary tradition.
Local guide
There is a small private railway called the Fukushima Kotsu Iizaka Line that runs from Fukushima Station north-northwest through rice fields and quiet suburbs to a terminal stop: Iizaka Onsen Station. The trip takes twenty-five minutes and the train is a single car, older, not crowded except on weekends. When you step off at the end, you are in a town that has been doing this since before records were kept clearly, a place where the oldest bathhouse opened under a name that translates roughly as Mackerel Lake Bath, and where a famous haiku poet stopped in 1689 on his way north.
Matsuo Basho passed through Iizaka in the summer of that year, during the journey he documented in Oku no Hosomichi, and the town he encountered had four bathhouses, seventy-four households, and three hundred people. Today it has over forty ryokan and nine public baths, but Sabakoyu, that oldest bathhouse, still stands near the center of the village, rebuilt in wood after the original structure wore out, its entrance facing the street at a slightly formal angle. The water flowing into its communal tub comes out of the earth near fifty degrees Celsius, which is on the hotter end of what most people can sit in comfortably. Locals are used to it. First-timers often do not last long.
The spring water at Iizaka is classified as a simple thermal type, which is a way of saying it is not loaded with one dramatic mineral compound. It is colorless, essentially odorless, and soft on the skin. What it has is temperature and volume, with enough heat to genuinely warm the deep muscles after a long day. The town itself is quiet in the way that old resort towns that predate modern tourism often are, more worn than polished, with a few restaurants and sake shops along the main street and residents who use the public baths the way you might use a neighborhood gym.
The most direct way to visit is the combination that Basho would have understood: arrive by train, walk to Sabakoyu, soak until the heat becomes too much, walk back through the steam-scented evening air, and eat at a small place near the station. Iizaka does not perform for visitors. It just stays open and hot.
Mineral chemistry
Water character inferred from mineral type — verify on site.
Simple thermal springs have lower dissolved mineral content but are valued for the pure therapeutic effect of heat immersion itself — easing muscle tension and improving circulation. Considered the gentlest introduction to hot spring bathing.
Standard precautions apply: avoid bathing within 30 minutes of eating, keep soaks to 10–15 minutes for first-timers, and hydrate before and after.
Similar springs
Dogo Onsen ranks among the oldest hot springs in Japan, with written records documenting its use for more than 1,300 years and oral traditions pointing back considerably further. The landmark Dogo Onsen Honkan is a three-storey wooden bathhouse finished in 1894, widely credited as the inspiration for the bathhouse depicted in Studio Ghibli's Spirited Away. The spring water is mildly alkaline and has long been valued for its ability to soften and smooth the skin.
Beppu is the most geothermally active city in Japan, with more than 2,900 hot spring vents located within the city limits and eight distinct thermal spring zones collectively known as the Beppu Hatto. The variety on offer is wide, ranging from grand hotel bathhouses to modest neighborhood public facilities to the celebrated Hells, a collection of brilliantly colored boiling pools scattered across the city. The Hells run far too hot for bathing, but they draw visitors who come to walk among them and take in the spectacle.
Hakone is a sizable onsen district spread across a caldera, roughly 90 minutes from Tokyo by rail. Seventeen distinct spring sources supply the area's bathhouses, which range from large hotel rotenburo with views of Mt. Fuji and Lake Ashi to small, family-operated facilities tucked along the Old Tokaido road. Because the mineral makeup differs from one source to the next, visiting multiple bathhouses yields a genuinely different soaking experience each time.
One of Japan's most beloved onsen towns. Visitors put on a yukata and wooden sandals and stroll between seven public bathhouses along a willow-lined canal. The wooden bridges, stone walkways, and traditional inn facades have barely changed in a century. The town is built for wandering.
Amenities
Getting there
Take the Tohoku Shinkansen to Fukushima Station, then transfer to the Fukushima Electric Railway Iizaka Line. Trains run frequently and arrive at Iizaka Onsen Station in about 25 minutes.
Location & nearby
Iizaka Onsen, Fukushima
More springs in Tohoku
Set deep in the Hakkoda Mountains of Aomori Prefecture, Sukayu Onsen is a historic bathhouse best known for its cavernous mixed-bathing hall, the Sen-nin-buro, which translates as the Bath of a Thousand Bathers. The waters are strongly acidic, the setting is rustic and unhurried, and winter brings extraordinary snowfall to the surrounding mountains.
Tsuru-no-yu is the oldest of the seven inns at Nyuto, set deep in a beech forest in Akita Prefecture. The main draw is a large outdoor mixed-bathing pool fed by opaque, milky-white sulfurous water. Many regard it as the most beautiful onsen setting in Japan. People come here to put some distance between themselves and the rest of the world for a while.
Furofushi Onsen occupies a rocky cape in Fukaura, Aomori Prefecture, with outdoor bathing pools positioned at the edge of the Sea of Japan cliffs. The spring water runs a deep reddish-brown from its high iron and sodium chloride content. The main open-air bath and a dedicated women's pool both use fully undiluted water drawn straight from the source. Sunsets over the water are a particular draw. Once day visitors depart in the late afternoon, overnight guests have the pools to themselves.
Common questions
What is the water temperature at Iizaka Onsen?▾
The water temperature at Iizaka Onsen ranges up to 60°C (minimum around 42°C).
Is Iizaka Onsen free to visit?▾
Iizaka Onsen charges an entrance fee in JPY.
Is Iizaka Onsen a public or private bath?▾
Iizaka Onsen is a public bathing spring.
Are tattoos allowed at Iizaka Onsen?▾
No, Iizaka Onsen does not permit visible tattoos.
What is the nearest station to Iizaka Onsen?▾
The nearest station to Iizaka Onsen is Iizakaonseneki, about 0km away.