Arafune Cold Storage is a historic facility associated with the silk industry, sericultural, which was designated a UNESCO World Heritage site in 2014. The facility built between 1905 and 1914 uses cold air flowing from underground to keep the air in each of its three chambers at the correct temperature. The controlled environment in the Fu-ketsu allowed multiple cycles of silkworm rearing in a year, compared to the naturally occurring single cycle. This significant increase in productivity allowed the Arafune Cold Storage to supply clients throughout 40 prefectures of Japan and the Korean Peninsula. The Arafune Cold Storage facility forms part of the UNESCO World Heritage Listing along with the Tomioka Silk Mill, Tajima Yahei Sericulture Farm and Takayama-sha Sericulture School.