A thin veneer of white stucco scored to give the appearance of large cut blocks of stone, covers the brick structure.  A high foundation with 11 steps leads to the main level showcases the temple appearance typical of public Greek Revival buildings.  A low, plain triangular roof sits over a wide decorative band supported by six massive pilasters, three on each side, and two fluted, Doric columns that support the central, recessed entryway. The sanctuary features the church’s original 1867 Johnson tracker organ which was used during services until 1961 and was most recently restored in 1984. The instrument includes all its original parts, components, fixtures, accessories, and wood pipes inscribed with the names of prominent Madison individuals.