Heritage Open Day: We explore the stories of Everyday Lives and how unsung heroes in the Borough of Harrow left their imprints on our lives today. The landmark, 932 year old, St Mary's Church, Harrow on the Hill, will be open all day, and we will be showcasing its remarkable evolution with the slant of the Festival Theme-Everyday Histories. The fantastic Spire Cafe will be open from 11am until 6pm offering a friendly welcome and home-cooked, freshly prepared food.