Free admission!! I'm glad I visited this place since the Takayama Shrine ruins are currently under restoration (as of April 2026) and not open to the public. There are some interesting sights, such as the silkworm room and the high windows that can be seen from the inside.
This facility was designed for experimentation and practical application aimed at improving the productivity of sericulture, which supported Japan's modernization. While the Takayama-sha facility, designated as part of the "Tomioka Silk Mill and Related Industrial Heritage," is more well-known, the Keishin-sha facility is also quite impressive. Takayama Chogoro of the Takayama-sha and Kimura Kyuzo of the Keishin-sha were brothers; Chogoro inherited the Takayama family business, while Kyuzo married into the Kimura family. The brothers, realizing that superior cocoons could be produced in the well-ventilated, warm silkworm rearing room on the second floor, each contributed to improving sericulture through their own innovations.
Although the wooden model silkworm rearing room doesn't have a modern appearance, it demonstrates meticulous attention to ventilation and thorough control of temperature and humidity. It would have been difficult for an average farm to create such an environment, but it certainly served as a good example.
It's easily within walking distance from Kodama Station on the JR Hachiko Line, and nearby are the ruins of Kijioka Castle and the Hanawa Hokiichi Memorial Museum. Rather than aimlessly waiting for the infrequent trains, you might broaden your interests by exploring the various sights around you.
It seems this was a place where silkworm farmers from all over Japan came to learn about sericulture. The exterior is magnificent, but there are many other things to see, such as the building's structure and the ingenuity of its fixtures. It's an eco-house that's still relevant today, so it's a must-see for anyone involved in architecture.
For example, the underfloor structure has a unique design unlike anything you'll see elsewhere, with bricks for heat storage and partitions to distribute heat into the interior. The more you look at it, the more impressed you'll be. You can see it by peering into the foundation on the side, so please take a look if you're interested!
It's not a World Heritage Site, but it's worth seeing.
We admire the founding spirit of the Meiji era, when silkworms transported silk to Yokohama Port by waterway and rail! The site is spacious and free of charge at the municipal facility in Kodama-cho, now Honjo. We apologize for stepping on and killing the silkworms.