A year after the organization of Maury County in 1807, Columbia was laid out in 1808 and lots were sold. The original town, on the south bank of the Duck River, consisted of only four blocks. The town was incorporated in 1817. For years, it was the county seat of the richest county in agricultural wealth in the state. Today, it is a tourist destination, most of whom are drawn by the numerous historic sites in the area. Attractions include the James K. Polk Ancestral Home, the Columbia Athenaeum, Mule Day, and nearby plantation homes.