Search Hot Springs

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.

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.

A peaceful artsy onsen town at the foot of Mt. Yufu in Oita Prefecture. The town is known for boutique galleries, craft shops, and ryokan with private outdoor baths. Lake Kinrin sits at the heart of it all. On quiet mornings, steam rises off the lake's surface in a way that seems almost designed to make you stop and stand still.

Noboribetsu Onsen is the best-known hot spring resort in Hokkaido, centered on a volcanic crater called Jigokudani, a name that translates to Hell Valley. From the crater floor, nine chemically distinct spring types rise to the surface, each with its own mineral character. Sulfurous steam drifts across the landscape constantly, giving the valley a quality found nowhere else in Japan. The ground here is visibly alive.

Ibusuki is a subtropical coastal city at the southern tip of Kyushu, built around natural sand baths in which bathers are buried in geothermally heated black sand. The beach stretches along the foot of Mt. Kaimon, a volcano of near-perfect conical shape. Attendants dressed in yukata guide visitors to their assigned patches of sand, lay them down, and cover them over, leaving them to look up at the open sky.

A highland onsen resort at around 880 meters in the Zao mountain range of Yamagata Prefecture. The strongly acidic sulfur springs are among the most potent in Tohoku. In winter, the mountain above becomes famous for juhyo: fir trees coated in thick mantles of rime ice that form bizarre shapes the Japanese call snow monsters.

Shimabara Onsen occupies the eastern coast of the Shimabara Peninsula in Nagasaki Prefecture, a historic spa town commonly called the City of Water. More than 60 spring sites together produce roughly 220,000 tonnes of water per day, and that water moves openly along stone-lined channels running through the streets. The 1624 Shimabara Castle rises above the town, and the surrounding terrain reflects the influence of Mount Unzen, an active volcano that defines the character of the region.

Ryujin Onsen sits in a narrow gorge carved through the Kii Mountains of Wakayama Prefecture, roughly 90 minutes from the coast by bus. The water is a sodium bicarbonate spring measuring pH 9.9, making it one of Japan's most alkaline, and it has long been regarded as one of the country's finest springs for beautifying the skin. Two ryokan, Kamigoten and Shimogoten, have operated in this gorge since the seventeenth century.

Funaoka Onsen is a public bathhouse dating to 1923 in the Funaoka district of northern Kyoto, now registered as a Tangible Cultural Property. The front gate is framed by a karahafu gable, a curved pediment style associated with Japanese castle construction. The interior walls are lined with carved wooden panels depicting mythological scenes, the work of artists connected to the Imperial Court over a period of ten years. Bathers can choose between indoor and outdoor pools.

Onneto Hot Falls is a geothermal waterfall located within Akan Mashu National Park in eastern Hokkaido, part of the UNESCO-listed Shiretoko wilderness. This is not a bathing site. Entering the water has been banned since 1989 to protect rare manganese-producing microorganisms that coat the rock surfaces in unusual black mineral deposits. The falls are visited as a scenic viewpoint, reached by a 20-minute walk through the surrounding forest.

Tokigawa Onsen sits in Hiki District, Saitama Prefecture, roughly 90 minutes from central Tokyo. The water rises from Chichibu Paleozoic strata at a depth of 1,700 meters and registers pH 10, placing it firmly in the highly alkaline range. Bathers consistently note the silky feel it leaves on the skin. The facility has held onto its Showa-era bathhouse character rather than updating it.

Ito sits along the eastern shore of the Izu Peninsula, facing the ocean and ranking among Japan's most productive hot spring districts by volume. More than 1,500 individual springs feed the town's supply, together pushing out around 30,000 kiloliters of water each day. Palm-lined avenues, tropical parks, and botanical gardens set the tone here, giving Ito a resort atmosphere that reads as distinctly its own compared to inland onsen destinations.

Hotel Sakan sits within the Akiu Onsen resort in Miyagi Prefecture, one of Japan's three ancient imperial hot springs. The inn has remained in continuous operation under the same family line for 34 generations, a span of more than 800 years. The spring water is classified as a sodium sulfate type, and tradition holds that Emperor Kinmei once bathed here to recuperate from illness. On the property stands a sacred flame that is said to have been burning without interruption for 400 years, brought originally from Mount Koya.

An old coastal resort town where hot springs meet the Pacific. The white-sand beach and dramatic rock formations create a setting unlike most onsen destinations. The ancient outdoor baths of Saki-no-Yu sit directly above the ocean. You soak while watching the waves crash below you.

Nikko Yumoto Onsen sits at the edge of Lake Yunoko inside Nikko National Park, high in the mountains. The waters are milky and sulfurous, and travelers have been coming here for hundreds of years. The park surrounds the onsen with sacred forests and waterfalls, making a long day of hiking through them a natural prelude to a long soak.

A quiet gorge-side onsen town in Miyagi Prefecture with nine distinct spring types, the famous Naruko Gorge, and a deep tradition of kokeshi doll making. The sulfurous waters and unhurried Tohoku atmosphere make this a favourite for those who want something more authentic than the well-worn tourist circuit.

Kirishima Onsen occupies the lower slopes of the Kirishima mountain range in Kagoshima Prefecture, where visitors can look out across Sakurajima and Kagoshima Bay. The region is organized around four separate hot spring towns, collectively offering dozens of spring varieties. It is widely known as the spot where the samurai leader Sakamoto Ryoma chose to honeymoon in 1866, an occasion the area recognizes as Japan's first modern honeymoon.

Sumatakyo Onsen is a secluded hot spring village tucked into the Sumata Gorge in the Southern Alps of Shizuoka Prefecture. The thermal water is a simple sulfur spring with a pH of 8.9, called bijin-no-yu locally, meaning beauty water. The village lies alongside a vivid turquoise dam reservoir and the well-known Yume no Tsuribashi suspension bridge. Reaching it depends on the historic Oigawa Railway.

Honzawa Onsen sits within the Hakone volcanic zone of Kanagawa Prefecture, drawing from a geothermal system that has driven the formation of the Hakone caldera for more than 300,000 years. The waters carry a notable sulfurous character and are dense with dissolved minerals. The spring occupies a forested mountain valley setting.

Kappa-no-yu is a free, open-air bathing spot tucked into Yagen Valley on the Shimokita Peninsula in Aomori Prefecture, roughly 2 kilometers up the slope from the central Yagen Onsen cluster. Two separate baths rest beside a clear mountain stream, surrounded by old-growth beech and cypress trees. The water temperature holds at 46 degrees Celsius. Visitors are not permitted to bring soap or shampoo. The baths are open from April through November and charge no entry fee.