The Factory Diner: Park Hills Share: Restaurants The Factory Diner: Park Hills Visit Website 239 West Main Street Park Hills, MO 63601 (573) 518-0161 Facebook Hours: Open 7 Days a Week! 6:30 a.m. to 3:00 p.m. About Map About Breakfast and lunch diner boasting the ''Best Breakfast in Town''! Two additional locations in Farmington. Meeting room available for small groups and outside seating available. Directions Located in Downtown Park Hills, right on Main Street!