Tells the history of Cass County since 1854, the year the county was opened for settlement. Permanent displays depict various stages in the county's history and are supplemented by temporary exhibits which are changed periodically throughout the year. Visitors learn about the golden age of steamboating on the Missouri River, the pioneer experience, the arrival of the train and the importance of farm production. A second part of the permanent display gives an overview of Cass County society from 1900 to 1930 with wall panels depicting the age of the automobile, the telephone and radio, churches and religious life, schools and entertainment. There is a Pioneer room, a Victorian Parlor and a General Store.