Hanayu Sky Terme Resort, located in Shibukawa City, Gunma Prefecture, is a popular day-use hot spring facility designed around the concept of a relaxing resort retreat. Its distinctive spaceship-like exterior immediately catches the eye, while inside, visitors can enjoy natural hot springs, stone saunas, relaxation facilities, and a restaurant in a comfortable resort setting.
The resort is conveniently located just a few minutes by car from the Shibukawa-Ikaho Interchange on the Kan-Etsu Expressway, making it an easy stop during a trip to Ikaho Onsen or other destinations in Gunma.
In 2019, the facility underwent a major renovation and added Onkatsu Cafe Nest, one of the largest wellness areas of its kind in northern Kanto. With its stone saunas, relaxation spaces, and reading area, the resort is designed for visitors who want to spend an entire day unwinding.
One of the greatest attractions of Hanayu Sky Terme Resort is its large bathing area, located approximately 15 meters above ground level. From the baths, visitors can enjoy sweeping views of Gunma’s mountains and the Kanto Plain, creating an especially open and refreshing bathing experience.
From the men’s bath, views extend toward Mount Haruna and the surrounding peaceful countryside, while the women’s bath offers magnificent views of Mount Akagi. The scenery changes with the seasons, allowing visitors to relax in the hot spring while enjoying Gunma’s natural landscape.
The underground hot spring source, located approximately 1,400 meters below the surface, is known as Shibukawa Onsen Kirameki-no-Yu. This sodium- and calcium-rich chloride spring is known for its warming qualities, allowing bathers to feel comfortably warmed throughout the body.
The mildly alkaline water is also traditionally regarded as gentle on the skin and is sometimes called a “beauty bath.” The source text describes the spring as being associated with benefits such as improved circulation, relief from fatigue, and easing sensitivity to cold.
The bathing area features several types of baths, allowing visitors to choose an experience that suits their preference. The main bath uses the natural hot spring water generously and is maintained at a relatively high temperature of 42°C or above, providing a deeply warming soak.
The reclining bath allows guests to lie back in comfortably warm water and relax for longer periods. The sensation of gently floating in the water adds another dimension to the experience.
The men’s bathing area also features a Japanese cypress bath made with fragrant domestic hinoki cypress. The pleasant aroma of the wood creates a traditional Japanese bathing atmosphere.
In the outdoor baths, visitors can enjoy “fresh-source flowing water”, in which newly drawn hot spring water flows directly into the bath without being exposed to the air. Soaking in the open air while looking across the surrounding scenery is one of the resort’s most memorable experiences.
Another major attraction is Onkatsu Cafe Nest, one of the largest wellness areas in northern Kanto. “Onkatsu” refers to lifestyle practices centered on warming the body as part of a healthy daily routine.
The area features eight types of stone saunas, including spaces using Fuji lava stone and Himalayan rock salt. The warmth and far-infrared effects help create a comfortable environment for sweating and relaxation.
After warming up in the stone sauna, guests can cool down in the Aurora Cool Down Cave, a dedicated cooling space designed to provide a refreshing contrast to the heat.
Onkatsu Cafe Nest also provides numerous spaces where guests can simply relax between baths and sauna sessions. The reading area contains approximately 20,000 comic books and magazines, while television-equipped reclining chairs and electric massage chairs are available for comfortable downtime.
Complimentary hot drinks, including coffee, tea, and cocoa, are also available. The cozy atmosphere makes it easy to settle in and spend several hours relaxing.
Free Wi-Fi and workspaces are also provided, making the facility suitable not only for reading and leisure but also for visitors who need a place to work remotely while traveling.
The on-site restaurant serves dishes prepared with ingredients from Gunma Prefecture. One popular choice is the Akagi Pork ginger pork set meal, featuring juicy pork and a savory ginger-based sauce.
In addition to a spacious main dining hall, the facility offers smaller private rooms and medium-sized banquet rooms, making it suitable for families, groups, and gatherings.
Seasonal kaiseki-style meals and other dishes featuring local ingredients are also available, allowing visitors to enjoy Gunma’s flavors alongside their hot spring experience. A selection of desserts and drinks provides another way to relax after bathing.
The resort also includes Temomi-dokoro Karaku, where guests can receive body treatments, as well as a hair salon. Having a massage after enjoying the hot springs and stone saunas can make the visit even more relaxing.
With bathing, warming, dining, and body care all available in one location, the resort provides a convenient environment for taking a break from the demands of everyday life.
Hanayu Sky Terme Resort brings together natural hot springs, stone saunas, dining, relaxation services, and comfortable leisure spaces in a single destination. It is also convenient for visitors using public transportation, with access by bus from Shibukawa Station in about 10 minutes and approximately a 15-minute walk from JR Yagiwara Station.
Its convenient location also makes it an appealing stop before or after visiting Ikaho Onsen. Visitors can soak in natural hot spring water while looking out over Gunma’s mountains and countryside, relax in a stone sauna, enjoy a meal featuring local ingredients, and spend a leisurely day away from the usual pace of travel.
For travelers looking to refresh both body and mind during their time in Gunma, Hanayu Sky Terme Resort offers a relaxing way to experience the region’s hot spring culture and scenic beauty.