In 2012 the World Heritage Committee (UNESCO) appointed seven decorated farmhouses in the region of Hälsingland as Sweden’s fifteenth World Heritage Site. At the same time and with financial support from the Swedish Research Council, a multidisciplinary research group was established with the intention of exploring the decorative folk arts and crafts in the farmhouses of Hälsingland. The project, which was located at and directed from the Department of Conservation at the University of Gothenburg, was concluded in 2019. Its purpose was to investigate these interiors, analysing and interpreting them by using methods among which many are closely related to the field of craft science.