Historic Blenheim is a c.1859 central-hall plan Greek Revival-style brick farmhouse built by Albert Willcoxon just prior to the Civil War (1861-65). It is nationally significant for the voluminous quantity and quality of examples of Civil War inscriptions. More than 122 signatures, pictographs, games, and thoughts were left on the house walls by Union soldiers during their occupation of the Fairfax Court House area in 1862-63.