The Gettysburg National Museum was a Gettysburg Battlefield visitor attraction on the south border of the Gettysburg borough. Established by George D. Rosensteel after working at his uncle's 1888 Round Top Museum, the facility had an interpretive Battle of Gettysburg map using incandescent lights and was acquired by the National Park Service for use as the 1974–2008 Gettysburg National Military Park museum and visitor center after the Cyclorama Building at Gettysburg and before the Gettysburg Museum and Visitor Center.