I go there fairly often, seeing as my love is from that granola-y state. I know that in the fall there are quite a few city folk that like to venture up there for its quiet, scenic beauty. The locals call them Leaf Peepers, and get very annoyed when they drive erratically in order to take pictures out of car windows. There is a lot more to this state than leaves however.
When you go you should try the local dairy, after all Vermont is home to Cabot Cheese, not to mention the ice cream. The home of Ben & Jerry’s can be found here, along with multiple other places to stop for a “Creamy”, or soft serve ice cream to the non-local. Cider mills, and sugar houses dot the entire state, and make great little pit stops for a taste test, shopping, and even some education on the processes.