Fort McHenry National Monument and Historic Shrine is one of the biggest influences on American culture. It is the home of the national anthem, The Star Spangled Banner. This is why Fort McHenry is not only of historical importance to the American people, but also has a strong an emotional link with its country. In 1812 Francis Scott Key, the man who wrote the music and lyrics for the national anthem, saw the American flag flying over Fort McHenry. This is what inspired him.