Cox Farms runs its Fall Festival on Braddock Road in Centreville from mid-September into early November. The festival is built around the farm's hayride and its giant slides, with the Cornundrum cornfield adventure, rope swings, straw tunnels, themed play areas, a goat village, a kiddie zone, and farm animals and their babies. Live entertainment, local apples, fresh cider, and Foamhenge round out a visit.