Brief synthesisThe Tomioka Silk Mill dates from the early Meiji period. With its related sites including two sericulture schools and an egg storage site, it illustrates the desire of Japan, a traditional silk producer, to rapidly access the best mass production techniques. It included egg production, silkworm farming and the construction of a large mechanised raw silk reeling and spinning plant. Criterion (iv): Tomioka and its related sites form an outstanding example of an integrated ensemble for the mass production of raw silk. IntegrityThe integrity of the serial property’s composition is good, illustrating the idea of a productive complex for an intermediate textile product: raw silk.