Several famous people are associated with these Poweshiek County historic places including Wiliiam Manatt and Joel Stewart.
Some of the country's most noteable architects helped create the Poweshiek County places including Louis Sullivan, Stewart-Robison-Laffan, Rock Island Railroad, King Iron Bridge and Manufacturing C, Walter Burley Griffin, Stephen C. Earle, R. G. Coutts, Mortimer Cleveland, Charles Edward Eastman and J.C. Forcum. Prominent architectural styles found in Poweshiek Country are Romanesque, Italianate and Queen Anne.