Sumter is the county seat. In addition to the county and city, a national forest and the fort in Charleston Harbor are named after Gen. Thomas Sumter, the "Fighting Gamecock" of the American Revolutionary War. The General Thomas Sumter Memorial Park is located in the city of Sumter. The Sumter downtown area includes Sumter County Museum, Sumter Gallery of Art and the historic Sumter Opera House. Each spring the town holds the three-day Scottish Country Fair and Celtic Festival. During the blooming of thousands of Japanese irises from mid-May through mid-June, the Swan Lake Iris Gardens host the Sumter Iris Festival on Memorial Day weekend.