Vermont. We used to live in Quechee (right next to Woodstock) and it is such a beautiful area summer through first week of October and winter. Hiking, swimming holes, skiing, snowshoeing, river floating, quaint towns,
breweries, some great farm-to-table fare, covered bridges.. By the time we left in 2014 "leaf peeping" season was already getting crazy, and I imagine it's gotten even worse now. But hopefully other times of year are still worthwhile (just avoid mud season and stick season)