ADDISON COUNTY — Ten Addison County sugaring operations will open their doors to the public on Saturday, March 23, and Sunday, March 24, in conjunction with the Vermont Maple Sugar Makers’ Association’s 12th annual Vermont Maple Open House Weekend. This weekend event, when Vermont’s sugarmakers invite the public to their sugarhouses, gives visitors an opportunity to see how maple syrup is made and experience a day in the life of the sugarmaker.