OK so we know this is Cambridge, but we just couldn’t leave it off our list. This grassy area in the middle of Harvard University is more than just a college quad. The school was founded in 1636, after all, and its campus is steeped in history. A grassy respite from the hustle of Harvard Square, Harvard Yard is a great place to rub elbows with the nation’s next generation of elites. Just don’t try to park your car here.