The National Prisoner of War Museum, which also serves as the park's visitor center, opens at 9:00 a.m. and closes at 4:30 p.m. It is open every day of the week year-round, except on Thanksgiving Day, Christmas Day, and New Year's Day. The Avenue of Flags leading to the Rostrum in the National Cemetery. NPS/Andersonville NHS Park Grounds The park grounds are open daily from 8:00 am until 5:00 p.m., allowing access to the National Prisoner of War Museum, the historic prison site and the Andersonville National Cemetery. The park grounds including the National Prisoner of War Museum and the historic prison site are closed only three days per year: New Years Day, Thanksgiving Day, and Christmas Day. Andersonville National Cemetery The National Cemetery is open every day of the year from 8:00 a.m. until 5:00 p.m. On New Years Day, Thanksgiving Day, and Christmas Day access to the National Cemetery is provided through the Cemetery Entrance Gate.