
Guide
The Tomioka Silk Mill, located in Tomioka City, Gunma Prefecture, is a vital historical site symbolizing Japan's modernization. Established in 1872 (Meiji 5) by the Meiji government, this facility served as a state-run model factory that introduced advanced Western technology, playing a crucial role in the development of the Japanese silk industry. Now recognized as a UNESCO World Heritage site, its historical value and architectural beauty invite visitors to step back into the vibrant energy of the Meiji era. The expansive grounds feature numerous precious structures that convey the technology and daily lives of the time, offering a firsthand look at how Japan's modern industry was built.
During the late Edo period, Japan was rapidly expanding its raw silk exports following its opening to the world. However, there were challenges regarding quality, and Western nations were demanding improvements. To secure foreign currency and modernize the nation, the Meiji government decided to build large-scale factories incorporating Western techniques. Tomioka was chosen due to its ideal conditions: a thriving sericulture tradition, abundant water resources, and a vast area available for construction.
Based on a plan by French instructor Paul Brunat, Western technology merged with traditional Japanese silk-reeling culture. The female workers (kojo) gathered from across the country did more than just learn a skill; they established a new lifestyle working in a modern factory setting. This facility was not just a factory, but a cultural turning point that transformed Japan's social structure and the way women worked. The site has followed the evolution of the silk industry through privatization and mergers, eventually being incorporated into Katakura Silk Spinning Co., Ltd. in 1939.

The site features various buildings that showcase the technology of the era. The reeling hall, stretching approximately 140 meters, is a must-see for its overwhelming scale and craftsmanship. Additionally, the "Nishioki-mayokoro" (Western Silk Reeling Hall), designated as a National Treasure, underwent preservation work in 2020 and has been reborn with a multi-purpose hall featuring glass-walled structures. The "House-in-House" design allows you to observe the history of operations through glass, offering a unique experience where history meets modern preservation.
The machinery on display, the artifacts depicting the lives of the workers, and the architectural beauty of the buildings themselves are all deeply valuable. We invite you to appreciate the heavy-set architecture and the exquisite technical details that embody the weight of history.
The Tomioka Silk Mill shows different faces depending on the season. The autumn season, when the surrounding mountains turn colorful, and the winter season, with its crisp, clear air, highlight the beauty of the historic structures. During the daytime, bright sunlight allows you to see the fine details of the buildings clearly, making it an excellent time for photography. As evening approaches, a serene atmosphere settles over the site, perfect for a quiet, contemplative stroll.

Beyond just viewing the exteriors, participating in a guided tour will provide a much deeper understanding of the site. Through guided explanations, the story of how these buildings supported a nation's development comes to life. At the "Tomioka Silk Gallery" located within the Nishioki-mayokoro, you can experience the charm of Japanese silk. Observe products that blend traditional techniques with modern sensibilities to experience the spirit of Japanese craftsmanship.
The area around Tomioka is blessed with beautiful scenery. You can see the majestic Mount Asama in the distance and the rugged rock formations of Mount Myogi nearby. After your historical stroll, we recommend visiting local cafes and shops to enjoy the regional specialties while taking in the natural landscape.

As the site is extensive and involves walking through historic structures, we recommend wearing comfortable walking shoes. Please respect the cultural properties during your visit.