Hendrie Valley Sanctuary, part of the Royal Botanical Gardens, is a beautiful 100-hectare protected area centred around an expansive river-mouth marsh complex, forested slopes, and four creeks, including Grindstone Creek, forming one of the most ecologically significant wetland corridors on Lake Ontario. Boardwalks and trails follow the creek through marsh pools, wooded slopes, and oxbows, with plenty of chances to spot herons, turtles, and warblers. There is a lovely 4.5-kilometre trail network with several easy access points, making it an excellent place for a leisurely walk, with plenty of wildlife to see along the way.