If you come to the Tomioka Silk Mill, why don't you visit and pray at the Nukisaki shrine in Tomioka city.
The Nukisaki shrine is historical shrine.
The shrine established about 1,400 years ago.
And current main building of the shrine was built in Edo era.
That is very beautiful vermillion.
If you go to there, you get off a train at Joshu-Itinomiya station and walk 15 minutes.
Tomioka Silk Mill and Related Industrial Heritage was registered the World Heritage Site today!
They were basis of the modern industrial in Japan.
"The Tomioka Silk Mill and Related Industrial Heritage" is comprised of four places.
1) Tomioka Silk Mill in Tomioka city
2) Takayama-sha Sericulture School in Fujioka city
3) Tajima Yahei sericulture Farm in Isesaki city
4) Arafune Cold Strage in Shimonita town
Each city and town must maintain and manage.
And other silk industry heritage are in Gunma.
The others should cooperate with the heritage site.
Because the others are important to silk industries.
http://worldheritage.pref.gunma.jp/en/