Site of the alleged plot by Aaron Burr and Harman Blennerhassett to establish a southwest empire. Features the reconstructed Blennerhassett Mansion, guided tours, concession stand, gift shop, narrated wagon rides, hiking trails and picnic facilities. Frequent special events include Mansion by Candlelight each October. Open May– October. Exact schedule varies with the seasons. Please call to confirm the Island will be open on the day you plan to visit (always closed on Monday)