National Geographic Adventure is a great magazine. It differs quite a bit from it's parent publicaiton in that it's taylor made for people like us who are always looking for a new, great adventure. Their website has been updated with a short, but sweet, article on Weekend Adventures that you can find close to where you live.
Some of the ones that sound great to me are "Explore A Lost Canyon" in Utah and "Paddle A Pirate Lair" in Georgia. Something here for everyone.