Any free destinations for nature and flora in Western and Southwestern Ontario? [closed]

Please recommend free nature and wildlife areas, ideally with a body of water, located anywhere, but NO further west than Guelph and Brantford, Ontario. I welcome suggestions in the Niagara region, excluding Niagara Falls.

I already know of Belwood Lake and Guelph Lake (in Guelph), Island Lake (in Orangevlle), Webster's Falls (in Hamilton), and Ball's Falls Conservation Area (in Jordan, ON), but all such reserves are operated by official conservation areas which demand admissions fees.