Once again, on Saturday October 17, Doors Open Niagara-on-the-Lake is inviting locals and visitors to discover the many unique sites and businesses Niagara has to offer. Under the banner of Doors Open Ontario and coordinated by the Niagara-on-the-Lake Museum, the public is encouraged to explore one of the most historic communities in Ontario, and visit sites of historical, architectural and cultural significance – including some places rarely open to the public.