Sullivan's Island South Carolina is a barrier island in Charleston County, South Carolina. It's southern shoreline is Charleston Harbor and eastern shoreline is the Atlantic Ocean. This strategic location at the opening of Charleston Harbor was used in the American Revolution for Fort Sullivan, which evolved into extensive defense works to protect Charleston and was renamed Fort Moultrie during the Civil War. ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour