A Traditional Mountain Village Shaped by Sericulture
The village developed on the left bank of the Shirasuna River, where a natural river terrace provided relatively level land in an otherwise mountainous landscape. Houses are arranged mainly along Akaiwa Hondo, the main road running through the settlement from north to south, creating a traditional linear village pattern.
Stone walls supporting fields and farmland surround the houses, while forests and mountain slopes form the wider landscape. Because the area had limited access to water, growing rice was difficult, and dry-field farming became more common.
Farming alone was not always sufficient to support local households, so sericulture developed as an important secondary occupation. From the late Edo period into the Meiji period, modern silk-farming techniques were introduced, helping Akaiwa grow into an important center of sericulture.
Many traditional two- and three-story sericulture farmhouses still survive. Their upper floors were often designed as silkworm-rearing rooms, providing a fascinating glimpse into the way Japanese farmhouses were adapted to the local silk industry.
The historic character of Akaiwa is not represented by individual buildings alone. Traditional storehouses, work sheds, stone walls, gardens, trees, farmland, and surrounding woodland all contribute to the overall historic landscape.
Preserving Akaiwa’s Historic Landscape
In Japan, a Preservation District for Groups of Traditional Buildings is an area designated by a municipality to protect a historically valuable group of buildings and the surrounding environment. Particularly important districts can be selected by the national government as Important Preservation Districts for Groups of Traditional Buildings.
Akaiwa was selected because it retains the distinctive character of a traditional mountain and sericulture settlement. The designated preservation area covers approximately 63 hectares.
Construction and alterations within the district are subject to regulations designed to protect its historic appearance. At the same time, the landscape has been preserved through the continued efforts of local residents, who have worked to maintain the village as a living community rather than simply preserving it as an open-air museum.
In 2015, Akaiwa was also recognized as part of the Japan Heritage story “Kakaa-Denka: Gunma’s Silk Story,” highlighting its connection with the history of Gunma’s silk industry.
The History of Akaiwa and the Development of Sericulture
A map dating from 1788 records various forms of work carried out in the area, including agriculture, forestry-related activities, and the production of hemp cloth. In 1803, a major fire destroyed much of the settlement.
Following the fire, many buildings were reconstructed using more fire-resistant construction methods, including earthen-walled storehouse-style architecture. Some of the traditional buildings seen today reflect this history of rebuilding.
During the Meiji period, the production and shipment of cocoons to Maebashi became increasingly important. Sericulture gradually developed into the central industry of the local economy.
Residents also received technical guidance associated with the Takayama-sha Sericulture School, which played an important role in spreading modern sericulture techniques in Japan. Sericulture remained particularly active in Akaiwa until around the 1950s, when most households in the village are said to have been involved in silk farming.
Historic Buildings and Places to See
Yumoto Family Residence
The Yumoto Family Residence is one of Akaiwa’s most notable historic buildings. Its main house was built in 1806, while the three-story silkworm-rearing section was added in 1897.
The family was involved in medicine during the Edo period. The residence is also associated with Takanō Chōei, a physician and scholar of Western studies who is said to have been sheltered here during the turbulent final years of the Edo period. A room known as the “Chōei Room” remains in the house.
Akaiwa Shrine
Akaiwa Shrine was established in 1908 by combining five shrines that had previously existed within the former Akaiwa Village. The shrine continues to serve as an important center of local community life, with festivals held in spring and autumn.
Upper Kannon-do Hall
The Upper Kannon-do Hall was built in 1764 and is considered the oldest surviving building in Akaiwa. It is also the only building in the settlement with a traditional thatched roof.
The roof has been maintained and periodically re-thatched with the cooperation of local residents, reflecting the community’s commitment to preserving its historic buildings.
Former Young Silkworm Rearing Facility — Domuro-no-Ie
Domuro-no-Ie is the former site of a communal silkworm-rearing facility built in the 1960s. Some of its temperature-control equipment remains, providing an insight into the techniques used during the later period of Akaiwa’s sericulture history.
Kaiko-no-Ie
Kaiko-no-Ie is a typical sericulture farmhouse built in 1932. The second floor contains displays of traditional sericulture tools and historical materials, allowing visitors to learn more about how silk farming was carried out in the region.
Akaiwa Sericulture Village Exhibition Hall
The Akaiwa Sericulture Village Exhibition Hall is located within the preservation district and introduces the history of local silk farming. Exhibits include traditional sericulture tools, manuals, and other materials related to the industry.
The exhibition space was created by renovating the second floor of a building where local residents once lived. The facility also incorporates environmentally conscious features, including the use of solar power.
Takanō Chōei and Akaiwa
Takanō Chōei was a physician and scholar of Western learning who lived during the final years of the Edo period. He came under government persecution after criticizing the shogunate’s policies toward foreign countries.
The Yumoto Family Residence is traditionally associated with his stay in Akaiwa, and the room where he is said to have been sheltered is still preserved. For visitors interested in Japanese history, the connection provides an opportunity to consider the political and intellectual changes taking place during the final decades of the Edo period.
Chōei criticized the Edict to Repel Foreign Ships and argued for the need to open Japan to the outside world. His connection with Akaiwa adds another layer of historical interest to this otherwise quiet mountain settlement.
Combining Akaiwa with Nearby Attractions
Akaiwa can be included in a wider sightseeing trip around the mountains of northwestern Gunma. Nearby destinations include Kusatsu Onsen, one of Japan’s most famous hot spring resorts, as well as Lake Nozoriko and Agatsuma Gorge.
The village is also located along the Japan Romantic Road, a scenic route through the mountainous areas of central Japan. Combining a visit to Akaiwa with nearby natural attractions offers an opportunity to experience both the cultural heritage and landscapes of the region.
Access and Visitor Information
Akaiwa can be reached from JR Naganohara-Kusatsuguchi Station by bus in approximately 15 minutes. By car, the settlement is approximately 50 kilometers from the Shibukawa-Ikaho Interchange on the Kan-Etsu Expressway.
Akaiwa Fureai-no-Ie provides parking and restroom facilities, and local guides may be available to introduce visitors to the history and traditional architecture of the village.
Discover Akaiwa Throughout the Seasons
Akaiwa offers a different atmosphere throughout the year. Spring brings fresh green foliage, while summer offers cool mountain air and the refreshing presence of the clear river. In autumn, the surrounding mountains are colored by brilliant foliage, while winter can transform the historic village into a peaceful snow-covered landscape.
The quiet streets, traditional houses, stone walls, and surrounding forests create an atmosphere of nostalgia and tranquility in every season.
A Living Village Preserving Japan’s Silk-Farming Heritage
Akaiwa is more than a historic tourist attraction. It is a living mountain community where the history of everyday life, agriculture, and sericulture remains visible in the landscape.
Walking through the village provides an opportunity to see how traditional Japanese homes were adapted for silk farming and how the local environment shaped the lives of the people who lived here. The preservation of the village has been made possible through the continuing efforts of local residents.
For travelers interested in traditional Japanese architecture, rural landscapes, silk production, and local history, Akaiwa offers a quiet and distinctive experience away from Japan’s larger tourist destinations.