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Blennerhassett Island Historical State Park is a state park located on Blennerhassett Island, a small island in the Ohio River, located in Wood County, West Virginia, USA. The property was the site of a Palladian mansion owned by Harman Blennerhassett, a participant in some of the alleged intrigues of Aaron Burr, and his wife Margaret Agnew. While the original mansion burned to the ground in 1811, a detailed replica, which can be toured, was built on its foundations in the 1980s. The Blennerhasset Mansion is built in a Federal architectural style with, Palladian attributes. The park is accessed via sternwheeler riverboat from Point Park on 2nd Street in Parkersburg, West Virginia. The riverboat ride takes about 20 minutes each way.