Dedicated June 24th 1819, the Old Union Church was erected by joint subscriptions of the Baptist, Christian, Methodist, and Presbyterian churches and Free and Accepted Masons. It was thought to be one of the most beautiful and artistic churches in Georgia of its period. In 1831, it hosted the first state internal improvement convention, composed of seventy-five representative citizens from thirty counties, whose resolutions, adopted almost immediately, resulted in the construction of railroads in which Georgia, in 1836, led the world with 200 miles. In 1864-65, the building was used as a hospital for wounded soldiers after the battles around Atlanta. After all the organizations either withdrew or erected separate buildings, the historic structure was reluctantly removed in 1896.