Heritage Open Day: Halesworth to Southwold Narrow Gauge Railway Charity volunteers will guide you on a walk through Halesworth’s 18th and 19th century transport history. The walk will end at Halesworth Museum at the station. As part of Halesworth’s Heritage Open Days, volunteers from the Halesworth to Southwold Narrow Gauge Railway Charitywill lead a guided walk at 10.00 from the Middle Car Park, between Saxons Way and Thoroughfare, through the Town Park into Halesworth Millennium Green.