The East Cocoon Warehouse was built using a wooden frame and brick construction method, which involves building walls by stacking bricks between the pillars. The first floor is an office, and the second floor is a storage facility for dried cocoons./ 画像提供：富岡市 富岡製糸場

The tour course takes you through the East Cocoon Warehouse, where the history of the facility is introduced./ 画像提供：富岡市 富岡製糸場

Keystone of the East Cocoon Warehouse. The year 1872 is written on it./ 画像提供：富岡市 富岡製糸場

The bricks in the warehouse are laid using a method called "French bond", in which the bricks are laid alternating long and short sides.The bricks in the warehouse are laid using a method called "French bond", in which the bricks are laid alternating long/ 画像提供：富岡市 富岡製糸場

Cocoon warehouse where bricks fired in a kiln for baking roofing tiles are piled up/ (c) FASHION HEADLINE

Like the East Cocoon Warehouse, the West Cocoon Warehouse also had a second floor used for storing cocoons. The first floor was a coal storage area, so there were no walls at the time./ 画像提供：富岡市 富岡製糸場

The West Cocoon Warehouse can only be viewed from the outside./ 画像提供：富岡市 富岡製糸場

Since being registered as a World Heritage Site, the number of visitors has tripled./ (c) FASHION HEADLINE

The East Cocoon Warehouse is a sightseeing route that traces the history of the Tomioka Silk Mill./ (c) FASHION HEADLINE

Inside the East Cocoon Warehouse, there is also a restored French-style silk reeling machine that was used in 1872 on display./ (c) FASHION HEADLINE

The entrance to the Tomioka Silk Mill, which was completed in 1872/ (c) FASHION HEADLINE

From Takasaki Station, take the Joshu Electric Railway to Joshu Tomioka Station/ (c) FASHION HEADLINE

There is also a sign celebrating the registration as a World Heritage Site at Joshu Tomioka Station./ 画像提供：富岡市 富岡製糸場

The view from Tomioka Silk Mill, which is said to resemble Paul Brunat's hometown/ (c) FASHION HEADLINE