Everyone likes going to the national parks for the great scenery, and some macro opportunities, but I find more and better stuff to shoot for macro at my local parks. One problem with the big parks is the vast acreage to cover. It's hard to find the good stuff when you have so much land, and so little time to explore if you only have a few days to a week. With your local parks you have the chance to shoot everyday if you like, and the more time you get to explore an area, the more you find to shoot.