National Home for Destitute Colored Women and Children (historical)   National Hotel (historical)   National Lutheran Home for the Aged   National Metropolitan Bank Building   National Museum of African Art   National Museum of American Art   National Museum of American History   National Museum of Health and Medicine   National Museum of History and Technology   National Law Enforcement Officers Memorial   National Museum of Women in the Arts   National Museum of the American Indian   National Philatelic and Postal History Museum   National Museum of Natural History   National Postal Museum   National Presbyterian Church   National Presbyterian Church (historical)   National Portrait Gallery   National Presbyterian Church Heliport   National Press Club Building   National Science Foundation Building   National Sculpture Garden and Ice Rink   National Society of Daughters of American Revolution, Headquarters and Museum   National Saving And Trust Company   National Trade And Professional School   National Training School for Boys (historical)   National Theatre   National Training School for Women and Girls (historical)   National Trust for Historic Preservation   National Womens Party Building   National World War II Memorial   National Zoo Entrance   National Zoological Park   National Zoological Park Administration Building   National Visitor Center   Naval Gun Factory (historical)   Naval Lodge (historical)   Naval Lodge Number 4 Masonic Hall (historical)   Nativity School   Navy Art Gallery