Liberty Jail is a historical jail in Liberty, Missouri, United States, which served as the county jail of Clay County, Missouri between December 1834 and 1853.The jail is known in the Latter Day Saint movement due to the imprisonment of Joseph Smith and some of his associates during the 1838 Mormon War. The location is now a visitors’ center operated by the Church of Jesus Christ of Latter-day Saints, and includes an indoor cut-away reconstruction of the jail on its original site, at 216 North Main.