Home Designed to complement the 1962 design, the glass and steel addition will provide a central elevator to the three levels of the Fort Donelson Visitor Center. A main level interior area will permit for the viewing of outdoor activities, as well as experiencing special interior interpretation or exhibits. Designed to complement the 1962 design, the glass and steel addition will provide a central elevator to the three levels of the Fort Donelson Visitor Center. A main level interior area will permit for the viewing of outdoor activities, as well as experiencing special interior interpretation or exhibits.