A Hot Spring Tradition Dating Back a Thousand Years
The history of Asama Onsen is said to stretch back approximately 1,000 years, to 939. According to local tradition, the spring was discovered by the powerful local Inukai family and became known as Inukai no Oyuyu, or the “Hot Spring of Inukai.” Its waters were revered as a sacred spring believed to soothe fatigue and help heal illness.
During the Keicho era of the Edo period, Matsumoto Domain lord Ishikawa established a villa here and used the hot springs as a retreat for the domain. The lord’s private bath, known as the Gotenyu, corresponds to the present-day Biwanoyu. Other baths, including Okumi no Yu, Yanagi no Yu, and Goyo-uma no Yu, were established for domain retainers.
The Zenkōji Kaido Meisho Ezu, an illustrated guide to famous places along the Zenkōji Highway, depicts travelers bathing here to recover from the fatigue of their journeys. This provides a glimpse of how Asama Onsen already functioned as a popular therapeutic bathing destination during the Edo period.
A Favorite of Writers and Members of the Imperial Family
Asama Onsen gained renewed attention during the Meiji period. Members of the Imperial family, including Prince Kan’in and Prince Kuni, visited the area, as did prominent writers and poets such as Wakayama Bokusui, Yosano Akiko, and Tokuda Shusei.
The combination of peaceful surroundings and gentle hot spring waters made Asama Onsen an appealing place for creative work and quiet reflection.
The area also experienced the upheavals of modern Japanese history. During the final stages of the Pacific War, a waiting facility for members of the special attack units was established here. After the war, Asama Onsen recovered as a hot spring tourism destination and has continued to preserve its traditions while welcoming visitors.
A Hot Spring Town Where Old and New Meet
The Asama Onsen district is centered around approximately 30 inns and two public day-use bathing facilities, Biwanoyu and Hot Plaza Asama. Several communal baths, including Senki no Yu, Minato no Yu, and Kurashita no Yu, are also scattered throughout the neighborhood.
These local bathhouses remain closely connected with everyday community life, allowing visitors to experience a living bathing culture rather than simply a resort designed for tourists.
In 2020, a new company called WAKUWAKU Asama Onsen was established to revitalize the hot spring district. Its initiatives have included renovating long-established inns and introducing a modern stay-without-meals or separate dining style that gives travelers greater flexibility.
Traditional inns and historic buildings now stand alongside renovated spaces, creating an appealing combination of old-fashioned hot spring atmosphere and contemporary comfort. The gently sloping streets are dotted with retro architecture, atmospheric cafés, and other places where visitors can stop during a leisurely walk.
Clear, Gentle Waters of an Alkaline Hot Spring
Asama Onsen is an alkaline simple hot spring, with source temperatures ranging from approximately 42°C to 52.3°C. Seven sources are currently used, ranging from Source No. 1 to the Taka-no-Yu source.
The water is generally colorless and odorless, although Source No. 1 has a subtle sulfur scent. The gentle water is traditionally associated with relief from fatigue, neuralgia, and muscle pain, and many bathers appreciate the smooth, soft feeling it leaves on the skin.
A former source known as Matsu-no-Yu dried up around 1954. Even today, however, an unused spring naturally flows in the forested hills southeast of the hot spring district, illustrating the area’s abundant underground water resources.
Taima Matsuri: A Spectacular Traditional Fire Festival
One of Asama Onsen’s most distinctive traditions is the annual Taima Matsuri, or Torch Festival, held at Misa Shrine, the guardian shrine of the hot spring town.
The festival is a solemn ritual in which a deity enshrined at the shrine’s mountain sanctuary is symbolically sent down with the light of torches. More than 50 men carrying large torches made from wheat straw parade through the hot spring town to the sound of fiery taiko drums.
At the climax of the ceremony, the torches are thrown, creating a dramatic spectacle as flames illuminate the night sky. The festival is sometimes counted among Japan’s three major unusual festivals, and visitors can also participate in the procession.
The combination of ancient religious tradition and community participation makes the Taima Matsuri one of the cultural highlights of Asama Onsen.
Misa Shrine: A Sacred Link Between the Mountains and Hot Springs
Misa Shrine consists of two shrines: the Okumiya, or Autumn Shrine, located in the mountains of Misayama, and the Harumiya, or Spring Shrine, known as Asama no Miya, in the hot spring district.
The shrine is believed to have originated as a place of worship for the Mountain Deity. It later came to enshrine Takeminakata no Mikoto, Yasakatome no Mikoto, and Kotoshironushi no Mikoto, the same principal deities associated with the tradition of Suwa Grand Shrine.
These deities have long been revered in the region as gods associated with hunting and agriculture. Just below the Spring Shrine once stood Jinguji Temple, a temple that served the shrine during the era of syncretic Buddhist and Shinto worship. Its history offers a glimpse into the close relationship between religion, the mountains, and the hot springs.
Discovering Matsumoto from Asama Onsen
Asama Onsen is an excellent base for exploring the wider Matsumoto area. The center of Matsumoto is only about 10 minutes away by car, with attractions including the National Treasure Matsumoto Castle and the historic former Kaichi School building.
The city’s traditional castle-town layout remains visible in many areas, while museums, traditional crafts, waterways, and historic streets provide opportunities to experience the distinctive culture of Matsumoto.
Staying at Asama Onsen also makes it possible to enjoy Matsumoto through the changing seasons. Cherry blossoms in spring, fresh greenery in summer, autumn foliage, and snowy winter scenery each create a different atmosphere around the hot spring town and its surrounding landscapes.
Convenient Access from Matsumoto Station
From the Matsumoto Station Castle Exit bus terminal, visitors can take an Alpico Kotsu bus on the Asama Line via Shinshu University or the Shin-Asama Line via Yokota. The journey takes approximately 25 minutes.
Other convenient routes include the Shinshu University–Yokota Loop Line and the Yokota–Shinshu University Loop Line, which reach the Asama Onsen entrance in approximately 20 minutes.
For visitors arriving by car, the hot spring district is approximately 20 minutes from Matsumoto Interchange on the Nagano Expressway via National Route 143. Because traffic in central Matsumoto can be heavy, the route from Azusagawa Smart Interchange through the Matsumoto Tunnel is recommended. The tunnel became toll-free in 2020, making this route even more convenient.
A Timeless Hot Spring Town in Matsumoto
With more than a thousand years of history, Asama Onsen is an important part of Matsumoto’s cultural heritage. Its clear, gentle waters have continued to welcome bathers for centuries, while its historic streets, traditional festivals, and literary connections preserve the atmosphere of an old Japanese spa town.
Today, Asama Onsen combines long-established traditions with new ideas for enjoying the town. A relaxing bath, a walk through the atmospheric streets, a local festival, or a visit to nearby Matsumoto Castle can each reveal a different side of this historic destination.
For travelers seeking a peaceful hot spring experience with easy access to the cultural attractions of Matsumoto, Asama Onsen offers a warm and memorable glimpse into the history, traditions, and everyday life of Japan’s mountain spa culture.