Tomioka

Tomioka is a city in Gunma Prefecture built around a silk mill complex. The factory grounds consist of red brick buildings with French-style design and still house machinery from the 1870s.

The city began in 1872 when Japan built its first government-owned silk mill with modern machines from France. This factory became a turning point for the nation's industrialization.

The city developed as a major hub for silk production and shaped how Japan adopted industrial methods. Visitors can observe how Western techniques merged with local weaving traditions.

Weekdays are the best time to visit when crowds are smaller and you can explore the buildings at your own pace. Most areas are easily walkable, but comfortable shoes are recommended.

The silk mill's warehouses use a sophisticated natural ventilation system designed in the 1800s that still works without modern air conditioning. This design maintains steady temperature and reveals the technical insight of that era.

Location: Gunma Prefecture

Inception: April 1, 1889

Reference: 102105

Shares border with: Takasaki, Annaka, Shimonita, Kanra

Website: https://city.tomioka.lg.jp

GPS coordinates: 36.25992,138.88992

Latest update: December 20, 2025 00:51