Whitman County Washington (Vacant / Not In Use) has 5 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Canyon Grain Bin and Chutes and Interior Grain Tramway, Barron, J. C., Flour Mill, Leonard, T. A., Barn and United Presbyterian Church.
Some of the country's most noteable architects helped create the Whitman County places including William E. Chapman, Aaron Kuhn, Seymour Manning, William Swain, J.G. Porter and James H. Cline. Prominent architectural styles found in Whitman Country are Romanesque.