Campbell's Island State Memorial is a granite monument that marks the site of a day-long battle on July 19, 1814 during the War of 1812 on Campbell's Island, Illinois. Dedicated in 1908, the monument is maintained by the Illinois Historic Preservation Agency as a national historic site.
Coordinates: 41°32′18″N 90°26′12″W / 41.5384°N 90.4366°W