Prehistoric cultural affiliation(s) include Transitional Period, Early Woodland Period and Late Archaic Period dating back to 3999 BC.
Some of the country's most noteable architects helped create the Dauphin County places including Chambersburg Bridge Co., Daniel Reichert, Cla Flin, G. Fisher, Builder Harnon & Jones, Lawrie & Green, Matthew Wilson and Charles Howard Lloyd. Prominent architectural styles found in Dauphin Country are Gothic Revival, Greek Revival and Late Gothic Revival.