The Historic Blenheim House was constructed in 1859, shortly after another home on that same property had burned down. During the United States Civil War both the Confederacy and the Union occupies the home.
The Blenheim House is one of the multiple locations where soldiers drew art on the walls and is party of the “Civil War Graffiti Trails”. A replica of the Union Solider graffiti art, in the ceiling of the Blenheim House, is in the visitors center.
On October 6, 2020 author Philip Andrew Hamilton got to meet one of the members of a citizen committee who helped convince the City of Fairfax to preserve the Blenheim House as a historical home, rather than converting it to a nursing home.