Places 'rarely open' to public in St. Catharines, Ont., offering free tours this weekend
Historic Decew Falls water treatment plant, one of 19 locations open Saturday, has been operating since 1876
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People have a unique opportunity to explore some of St. Catharines, Ont.,'s most iconic buildings, infrastructure and communities this weekend, as the Doors Open event pulls back the curtain on 19 sit...
