National Historic Landmarks in Ohio kjfitz 10 years ago Here are ten U.S. National Historic Landmarks in the state of Ohio… © Google MapsCincinnati Music Hall © Google MapsCincinnati Observatory © Google MapsCincinnati - Union Terminal © Bing MapsCleveland Arcade © Google MapsSubmarine USS Cod (SS-224) © Google MapsJohn A. Roebling Suspension Bridge © Google MapsFort Meigs © Google MapsJames A. Garfield National Historic Site © Google MapsKirtland Temple © Google MapsWilliam McKinley Presidential Library and Museum