Heritage Open Day: Come to Strutt's North Mill and discover costumed characters, listen to short talks on life at the mill, and join in family and craft activities. We're opening Strutt's North Mill for a fun day of history and family activities! Meet costumed characters as they tell you what life was like working at this revolutionary mill in the 19th century. Discover the amazing engineering of the Grade I listed North Mill with knowledgeable guides and short talks, as well as story time for the younger ones, and traditional crafts such as rag rugging for the young at heart! Watch spinning demonstrations whilst learning of the wonder of natural fibres, and have a go at mill jobs such as 'doffing' and 'carding' as you discover the heart of the Derwent Valley Mills World Heritage Site.