Did you know that Canada's largest corn maze is located right here in Ontario, in the historic little town of Dundas? The maze launched for the season over the Labour Day weekend and is open daily in September from 9:30 a.m. to 5:00 p.m. Carve out 1–2 hours for just the maze; it is Canada's largest corn maze after all. So, if you're looking for something fun to kick off your fall adventures, a visit to Canada's largest corn maze is not a bad way to get into the seasonal spirit. The Hanes Farm and Corn Maze is located at 1001 Highway #5 West in Dundas, Ontario.