Heritage Open Days will run from Friday, September 11 to Sunday, September 20, offering special access to sites that are usually closed to the public or revealing new perspectives on familiar places. (Image: Beth Moseley)Katie Ellis, producer for Norfolk Heritage Open Days, said: "We're thrilled to have over 300 events in the Norfolk programme for visitors to enjoy. Other events include the King’s Lynn Heritage Open Day, which on September 13 will feature re-enactors, family activities, miniature trains and boats, classic cars, and exhibitions. The 2026 Norfolk Heritage Open Days brochure, listing 230 events across the county, is now available to help visitors plan their experience. Norfolk Heritage Open Days will run from September 11 to September 20.