Walter Benjamin’s famous 1935 essay ‘The Work of Art in the Age of Mechanical Reproduction’ addresses the authenticity of a work of art as something beyond the merely material and technical. Benjamin constructs a broader notion of authenticity that includes ‘the life of things’ and is related to new techniques in artistic production. This broader sense of authenticity is used here to explore how it may help us to understand architecture in the age of digital reproduction. Two aspects of authenticity in Benjamin’s article are discussed: process reproduction and image reproduction. In process reproduction, authenticity is transformed through the mediation of technical procedures. Benjamin’s analysis of photography and fil...