If you like the outdoors, you should probably move to a place where they don't allow every river to get all sullied up with beer cans and Funyons bags. But if you can't move, there are a number of woodsy options that are surprisingly close. Perhaps the best place to go camping is Cedar Hill State Park. This "urban nature preserve" includes 355 campsites, most of them fairly wooded. Each site has water, electricity, a fire ring, a lantern pole and a picnic table, and all are within walking distance of restrooms with hot showers. If you're not a sissy, there are 30 more campsites with no amenities whatsoever. Besides camping, there are more than 15 miles of mountain biking trails, a preserved 19th-century farm and the Joe Pool Reservoir, where you can swim, ride jet skis or just chill out on a house boat.