a+u’s October 2022 issue features the work of Charles Rennie Mackintosh, born in 1868, in Glasgow, Scotland. Glasgow grew rapidly into a modern industrialized city in the latter half of the 1800s. With this urban development came a generation of students from Glasgow School of Art, including Mackintosh and his close associates known as The Four, who started creating designs and artworks from an entirely new vantage point. As detailed in an essay by guest editor Hiroaki Kimura, Mackintosh enriched traditional architectural composition through his advocacy of the “philosophy of craft,” which brought together craft and engineering. In their distance from historicist styles and pursuit of a new environmental aesthetic, these activities paralleled other movements in continental Europe at the turn of the 20th century. This issue showcases 15 built works by Mackintosh through lavish displays of archival drawings and historical photographs. The themes of conservation and preservation are paramount in considering the legacy of Mackintosh, as highlighted in the sheltering of Hill House and coming to terms with the loss of the Glasgow School of Art building.