Guida
The Tomizawa Family Residence, located in Daido, Nakanojo-machi, Gunma Prefecture, is an Important Cultural Property that preserves the architectural style of the late Edo period. This residence was the estate of the Tomizawa family, who were influential figures along the Mikuni Kaido route. The family was involved in the transport and trade of goods such as rice, salt, timber, and cocoons, and even provided moneylending services. Based on historical prayer slips found on-site, the construction is estimated to date back to around 1792 (Kansei 4). The most striking feature is the 'Mae Kabuto-zukuri' roof design, specifically engineered to facilitate the sericulture (silkworm farming) industry. This unique roof shape is characteristic of the Nakanojo area and serves as a living testament to traditional Japanese farmhouse structures.
The Tomizawa lineage has a history of developing this land (Daido Shinden) since the early Edo period. The heads of the family, known as 'Sanshiro,' served as local leaders. The location was a vital transport hub near the Daido Pass, where goods like rice from Echigo were moved. The family played a crucial role in this logistics network. In 1970, the residence was designated as a National Important Cultural Property due to its historical and architectural significance. Furthermore, in 1997, it was featured on a Japanese commemorative postage stamp series for traditional folk houses, highlighting its status as a precious cultural heritage.
The architectural masterpiece is the 'Mae Kabuto-zukuri' thatched roof. The front of the roof extends significantly to create space optimized for raising silkworms. The building is a two-story wooden structure with an Irimoya-zukuri style, boasting a first-floor area of approximately 310 square meters and a total floor area of about 482 square meters. Inside, visitors can observe the 'doma' (earthen floor) that supported daily life, the traditional 'irori' (sunken hearth), and the exquisite craftsmanship of the pillars. You can see the distinction between pillars finished with a plane (kanna) on the upper floors and those finished with an adze (cho-na) on the earthen floor, showcasing the high level of craftsmanship of the era.
To fully appreciate the texture of the thatched roof and the intricate internal structures, it is best to visit during bright daylight hours. The architecture harmonizes beautifully with the surrounding natural landscape. Visiting on clear, stable weather days is recommended to enjoy the historical scenery in its best light.
Visitors can experience the advanced architectural techniques of the late Edo period and the history of a region developed through sericulture. The sheer scale of the thatched roof and the traditional craftsmanship found in the details of the pillars and earthen floors provide a profound connection to Japan's traditional building methods.
Nakanojo Town offers many other historical structures and beautiful natural landscapes. The surrounding area is dotted with hot spring resorts (onsen) and various historical sites, allowing travelers to explore the rich culture of the region.
Please note the following when visiting the Tomizawa Family Residence: