Prehistoric cultural affiliation(s) include Woodland Period, Contact Period, Rural Industrial, Late Archaic, Early Woodland and Terminal Late Archaic dating back to 1000 BC.
Several famous people are associated with these Washington County historic places including Owen Wister, Rowland G. Hazard, Rowland II Hazard and Robert Rodman.
Some of the country's most noteable architects helped create the Washington County places including T.A. Tefft, W.C. Sawtelle, Mead & White McKim, William Gibbons Preston, Frank W. Angell, Frederick Law Olmsted, Sherman,R.A.,Sons & Co., John M. Merrick, Stephen A. Alpin and Isaac Spink. Prominent architectural styles found in Washington Country are Greek Revival, Late Victorian and Federal.