10 am – 5 pm 43rd Annual Hallockville Country Fair Ages: AllAnimals Art Family Hallockville Museum FarmRiverhead
All day Vote for Your Favorite Scarecrow! Ages: 3 and upFamily Free Halloween Stony Brook Village CenterStony Brook
Oct. 20, 12:30 pm Soul-Stirring Organ Concert at Marble Church During Open House NY Tour Marble Collegiate Church