Prehistoric cultural affiliation(s) include Windust Phase, Cascade Phase, Nimipu Phase, Tucannon Phase, Chinese, Et Al. and Nez Perce dating back to 10999 BC.
Some of the country's most noteable architects helped create the Nez Perce County places including Kirtland K. Cutter and Ralph Loring. Prominent architectural styles found in Nez Perce Country are Renaissance, Romanesque and Mission/Spanish Revival.