Prehistoric cultural affiliation(s) include Effigy Mound Culture, Late Woodland Stage, Efigy Mound Culture and Late Archaic dating back to 2499 BC.
Several famous people are associated with these Richland County historic places including Julia Busby Bowen and John Coumbe.
Some of the country's most noteable architects helped create the Richland County places including Frank Lloyd Wright, Percey D. Bentley, Henry Fiedler, Henry Leffler and Chicago Bridge and Iron Co.. Prominent architectural styles found in Richland Country are Classical Revival, Greek Revival and Italianate.