The post-op instructions told me to walk every day, so I took them at their word. Walking is pretty much the only exercise I can do at this point, anyway. New York is a city where people walk a lot, but walking for exercise on the sidewalks isn't so great, because you have to stop at a lot of lights.
Fortunately, I live half a block from Riverside Park. The park is four miles long, along the Hudson River, and I have my choice of paths. It's hardly wilderness, of course, but it's a green space with a lot of variety. Even though I've walked there quite a bit, I still don't know everything about it; on one recent evening, I was surprised to find a statue of Joan of Arc.