Darke County (OH) Darke County (OH) Ohio Videos By City/Township Gettysburg, Ohio (1) Greenville, Ohio (2) Pikeville, Ohio (1) Union City, Ohio (1) Abandoned Boyd Creek Pennsylvania Railroad Bridge, Pikeville, Ohio Bear’s Mill, Greenville, Ohio Greenville Creek Railroad Bridge. Greenville, Ohio McClure Road Phantom Bridge, Union City, Ohio Mill Road Phantom Bridge, Gettysburg, Ohio