Prehistoric cultural affiliation(s) include Late Archaic, Middle Woodland and Late Woodland dating back to 4999 BC.
Many famous people are associated with these Westchester County historic places including John D. Rockefeller, John Jay, Hachaliah Bailey, Garrard Crane, Joseph Lockwood and Timothy Knapp.
Some of the country's most noteable architects helped create the Westchester County places including Walker & Gillette, William Welles Bosworth, Delano & Aldrich, MacNeille & Lindeberg Mann, Nathan F. Barrett, Christian F. Rosborg, Lawrence O'Conner, Eugene Hill, B.S. Olmsted and Hiram Halle. Prominent architectural styles found in Westchester Country are Late Victorian, Classical Revival and Colonial Revival.