The limestone courthouse, which was already on the National Register as of September 22, 2000, is located on Ninth Street. Four different memorials are on its grounds: one for the Pottawatomies' Trail of Death, a cornerstone for the Rochester College, and two war memorials. Although most of the buildings in the district are constructed of brick, after the construction of the courthouse, with its rusticated limestone construction, it is believed that other buildings were renovated to match the courthouse using faux stone that was cemented to their brick structures. Limestone is also used on the name blocks of buildings. The historic fire department has an engraved limestone name block above its door. The city hall not only has a similar limestone name block, but the right and left bays of the hall have limestone diamonds above them.