Blennerhassett Island is a small island located in the Ohio River, near Parkersburg, West Virginia. It is part of the Blennerhassett Island Historical State Park, which features a reconstructed mansion that belonged to Harman Blennerhassett, an Irish immigrant and landowner in the early 19th century. The island is accessible by boat and offers scenic views, walking trails, and picnic areas. The island is historically significant due to its association with the controversial figure of Aaron Burr, who was involved in a conspiracy to create an independent nation in the early 1800s. Today, visitors can explore the island's history through guided tours and educational programs, making it a popular destination for history enthusiasts and nature lovers alike.