Built in 1839 of nearby red limestone, Carthage Jail served as Hancock County’s jail until 1866, combining cells with living quarters for the jailer’s family. Its greatest significance comes from June 1844, when Joseph Smith came to Carthage to face charges connected to the destruction of the Nauvoo Expositor. Joined by his brother Hyrum and fellow Latter Day Saints John Taylor and Willard Richards, he was held in the jail until a mob of about 84 men attacked the upper room on June 27, killing Joseph and Hyrum Smith, badly wounding Taylor, and leaving Richards only slightly injured. Later restored, the building now operates as a museum.