Fort McHenry National Monument
Fort McHenry is a fort best known for its role in the War of 1812 or the Battle of Baltimore, when it successfully defended Baltimore Harbor from an attack by the British navy in Chesapeake Bay. It was during this time that Francis Scott Key was inspired to write The Star-Spangled Banner, the poem that was eventually turned into the National Anthem of the United States. Fort McHenry was also used during the American Civil War as a military prision and World War II as a coast guard base.