As soon as the air turns crisp, we can hardly wait to pull on a sweater and celebrate the new season at an outdoor festival. The country's biggest Oktoberfest and the 48th annual National Apple Harvest Festival were shoo-ins for this roundup of 10 fall festivals. But we also tracked down some quirkier fests worth the trip, including one where 1,500 sheep parade down a Sun Valley main street. Here are our favorites this fall.