The Mifflin County Amish-Mennonite Historical Society’s Annual Fall Heritage Day will be held on Saturday, September 26, 2026 from 9 a.m to 2 p.m. at the corner of Main and Walnut Streets, Belleville PA. All are invited to stop and visit our two museum buildings and enjoy the exhibits and demonstrations from days-gone-by. New this year will be horse-drawn wagon rides.