About 8km north of the falls is this exceptional reserve, where you can get a sense of what the area was like pre-Europeans. There are 4km of walking trails winding down into a gorge, past huge boulders, cold caves, wildflowers and woods. The Niagara Parks Commission offers guided nature walks daily during the summer season for a nominal fee. Bring something to drink – the water in the Niagara River is far from clean.