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.

[3] 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 greatly resembled George Washington's Mount Vernon, due to its Palladian style.

The Museum is located two blocks from the riverboat landing at the corner of 2nd and Juliana Streets.

Exhibits focus on the regional history of west and central West Virginia, and include household furnishings, art, clothing, and prehistoric Native American tools, jewelry, weapons and items.