Smith County Courthouse (Tennessee)The Smith County Courthouse is a historic courthouse in Carthage, Tennessee, United States.LocationThe courthouse is located on the Court Square in Carthage, a small town in Smith County, Tennessee, United States. It overlooks the Cumberland River.HistoryIt was designed by architect Henry C. Jackson in the Second Empire architectural style. It has a mansard roof with a cupola.Architectural significanceIt has been listed on the National Register of Historic Places since April 17, 1979.