Tomioka was a town that once thrived as a mass producer of high quality silk.
Tomioka (富岡) is located in the south western part of
Gunma Prefecture. In the Edo Period Tomioka was part
of Kozuke Province under the tenryo territory. It was
under the direct control of the Tokugawa Shogunate.
When the Han system was abolished, Tomioka Town
came into existence in the Kitakanra district. In 1954
Tomioka Town annexed Ichinomiya town as well as the
villages of Ono, Kuroiwa, Nukabe, and Takase. It later
reached city status in 1958 and merged with Myogi town
in 2006 to make the present Tomioka. The city is most
known for the Tomioka Silk Mill, which played an
important part in the global silk industry. At one point in
history 80% of the raw silk in the world came from the
industrialized facility. The facility was established in the
Meiji Period and continued to sustain the growth of
Japan’s economy for many decades.
The area of Tomioka proved to be one of the optimal
places to farm silk. The silk mill was not the only place
that helped with the silk production. There is the
Takayama Sericulture School just outside the city where
people from all over Japan and nearby countries went to
study the silk industry. In another city the Tajima Yahei
Sericulture Farm is where high quality silkworm eggs
were raised. Silkworm farmers visited the farm to learn
about the techniques Tajime Yahei used to produce high
quality silk consistently. The Arafune Cold Storage was a
natural refrigerator used to store the silk in the early
1900s. It is a giant cave that is kept cool by the passing
wind through the crevices that accumulated snow over
the winter. These sites together are listed as a UNESCO
World Heritage under the Tomioka Silk Mill.
Kanto | Gunma | Tomioka
Tomioka Silk Mill
Tomioka Silk Mill is a UNESCO World Heritage Site that impacted the industrial age in Japan.
Kanto | Gunma | Tomioka
Takayama-sha Sericulture School
Takayama-sha Sericulture School was once the top school to learn about sericulture.
Kanto | Gunma | Tomioka
Tajima Yahei Sericulture Farm
Tajima Yahei Sericulture Farm is where the perfected ventilation system for high quality silk was established.
Kanto | Gunma | Tomioka
Arafune Cold Storage
Arafune Cold Storage was a natural refrigerator for the silks eggs in 1900s.