Chickasaw County Iowa has 6 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Chickasaw Octagon House and Darrow, George, Round Barn, Chickasaw County Courthouse, Foley, John, House.
Some of the country's most noteable architects helped create the Chickasaw County places including Cyrus Stocks and Ralston & Ralston. Prominent architectural styles found in Chickasaw Country are Art Deco, Italianate and Moderne.