Denison is a city in Grayson County, Texas. For a personalized experience, stay at a Denison bed and breakfast or a Denison Inn. While in town, enjoy a Fine Art Tour, held twice a year. Other attractions in the city include several historic areas, such as the commercial center at MKT and the Red River, the location of the Quedlinburgh Treasure. A B&B is a great place to spend time with your family after a busy day, or enjoy a family meal at the premier Italian restaurant in Denison, Devolli's Italian Restaurant. Less