Former Tomioka Silk Mill

旧富岡製糸場 (きゅうとみおかせいしじょう)

Tomioka, Gunma

Former Tomioka Silk Mill is a modern heritage site in Tomioka, Gunma. 3 of its buildings, including the Reeling Plant and East Cocoon Warehouse, are designated National Treasures (Meiji period, 1872).

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The text in this language is in preparation.

Key facts

Designation: National Treasures
Era: Meiji period and later
Type: Modern architecture
Location: Tomioka, Gunma
Address: 群馬県富岡市富岡1番地

Key facts

Designation: National Treasures
Era: Meiji period and later
Type: Modern architecture
Location: Tomioka, Gunma
Address: 群馬県富岡市富岡1番地

Buildings designated as National Treasures

Former Tomioka Silk Mill Reeling Plant
Era
Meiji period
Year
1872
Structure
timber-frame brick construction, building area 1,726.92 m², with an entrance on the east side, pantile roofing
Designated
December 10, 2014
See it in the Agency’s database
Former Tomioka Silk Mill East Cocoon Warehouse
Era
Meiji period
Year
1872
Structure
timber-frame brick construction, building area 1,486.60 m², two stories, with a lean-to roof on the north side and verandas on the west and south sides, pantile roofing
Designated
December 10, 2014
See it in the Agency’s database
Former Tomioka Silk Mill West Cocoon Warehouse
Era
Meiji period
Year
1872
Structure
timber-frame brick construction, building area 1,486.60 m², two stories, with verandas on the east and south sides, pantile roofing
Designated
December 10, 2014
See it in the Agency’s database

Sources and date checked

Facts such as eras, structures and locations are edited and translated by us from the Agency for Cultural Affairs’ database of nationally designated cultural properties. The Agency and the national government did not produce this page.

Database of nationally designated cultural properties

Checked on November 6, 2026