Head over to our annual Sleepy Hollow Festival in Historic Harmony, held in conjunction with the Zelienople Country Fall Festival. Park your car and ride the free shuttle (courtesy of Passavant) between our two towns and enjoy everything a country fall festival can offer, and more. FREE! 10 AM-4 PM. The Center of Harmony. 253 Mercer St, Harmony, PA 16037. 10-5 http://harmonybusinessassociation.com