Prisons, Paroles & POWs Castle Pinckney Not A Death Camp Castle Pinckney was a small masonry fortification built by the federal government in the 1790s in Charleston Harbor, SC. Built to protect the city of Charleston, it was located about a mile off shore from Charleston on a shoal off Shutes Folly Island, and was named for the Revolutionary War hero Charles C. Pinckney. By 1860 Castle Pinckney ...