Friends of the Concord Covered Bridge Historic District in Cobb County, Georgia is pleased to provide this walking tour of sites in and around the historic district. Enjoy this App and feel free to give us feedback so we can improve your experience. Walking tours of the Historic District, with four starting locations: 1. The Concord Road Trailhead to the Silver Comet Trail 2. Heritage Park, Fontaine at Nickajack Road 3. Floyd Road Trailhead to the Silver Comet Trail 4. Mavel Road Trailhead, mile marker 0.0 to the Silver Comet Trail The App uses GPS to guide you to each stop, begin the appropriate audio track, and guide you to the next stop. As such, we recommend that you keep your phone within sight of the sky, so that GPS will work best to guide you.