Heritage Open Day: Macclesfield's historic Old Town Hall is open as your base for Macclesfield Heritage Open Day. Head to Macclesfield Town Hall to kick-start your Macclesfield Heritage Open Day! We'll have our Information Station to direct you to all the HOD activities happening across town over the day, we'll also be hosting our annual Hobby/Volunteering Fairs plus the Made in Macc makers market up in the historic Assembly Room.