Despite alterations and additions, this church remains one of the finest antebellum ecclesiastical buildings in the state. The stuccoed brick building was constructed by Ward, a local architect-builder responsible for many residences in the Marshall area. The Greek Revival temple-form church with its unusual square tapered columns is a monumentally scaled work. Major changes occurred in 1909, when the building’s original square spire was removed, and in 1949, when the present octagonal cupola was added and an entrance vestibule constructed between the two center columns of the facade. The interior has suffered through numerous renovations, and only the proportions of the original rectangular auditorium have been preserved. As a major institutional building in a city with significant strategic value to the Confederacy, the church hosted several important events during the Civil War, including the first conference of the Trans-Mississippi states, convened by Jefferson Davis in 1862.