Whether you've got an extra vacation day to spare or not, summer is ALWAYS a good excuse for a long weekend trip. Life moves a little slower, food tastes a little sweeter and everything is just a bit simpler than in the place you left behind.
Luckily enough, America is chock-full of cool small towns that make for perfect long weekend trips. There's a very good chance that you're currently within a reasonable distance to at least one of them. Pick a spot that fits your style, and recharge on a three-day getaway.