Harrison Park in Owen Sound is probably the nicest municipal park that I know of. Given to the city by John and Emma Harrison in 1912, it had been John's personal project in the late 1800's, known as Harrison's Pleasure Grounds. It appeals to me both because the Sydenham River runs through it, and all the slopes around the edge of the park are still forested. And there's a great restaurant!
But my favourite feature is Weaver's Creek and falls. I'll share some pictures of that tomorrow. I'll undoubtedly be visiting Owen Sound and walking the trails of Harrison Park regularly over the next few years, and perhaps having lunch there too occasionally!