View from highway Photo view crossing bridge over Douglas Lake, TN. Douglas Lake, TN. is set at the foothills of the Appalachian Mountains. Formed from the French Broad River, TN and its tributaries of the Nolichucky, TN, and Pigeon Rivers, TN. North Carolina/Tennessee State Line to Kentucky/Tennessee State Line East Tennessee is home to an exceptional list of attractions, including the Chattanooga Choo Choo, the Tennessee Aquarium, Dollywood, Rock City, Ruby Falls, the Lost Sea, the International Storytelling Center, Ripley\'s Aquarium, the Knoxville Zoo, Women\'s Basketball Hall of Fame, the birthplace of country music and NASCAR\'s home.