Through advocacy and direct action, Architectural Conservancy Ontario has been involved in preserving Ontario's architectural and environmental heritage since 1933 by helping communities and owners preserve buildings and structures of architectural merit, and places of natural beauty or interest. ACO is a charitable organization operating through a network of 25 autonomous local branches in communities across Ontario, linked by a small co-ordinating office in Toronto, and governed by its Executive and Provincial Council. Find your nearest branch in: - Brantford-Brant County - Chatham-Kenht - Clarington - Cobourg & East Northumberland - Collingwood - Credit and Humber Watershed - Guelph-Wellington - Halton Hills - Hamilton Region - Heritage Cambridge - Ingersoll - London Region - Meaford - Muskoka - Newmarket - North Bruce Grey Owen Sound - North Waterloo Region - Port Hope - Quinte Region - South Bruce-Grey - St. Catharines - St. Thomas-Elgin - Stratford-Perth County - Toronto - Windsor-Essex