In 1882, another architectural contest was held, with 200 architects participating. This time, the winner—the Frankfurt architect Paul Wallot—would actually see his Neo-Baroque project executed. The direct model for Wallot's design was Philadelphia's Memorial Hall, the main building of the 1876 Centennial Exhibition. Wallot adorned the building's façade with crowns and eagles symbolising imperial strength. The building's four corner towers represented the four German kingdoms at unification, Prussia, Bavaria, Saxony and Württemberg, and the heraldic coat of arms of each kingdom, as well as smaller devices representing various German city-states, flanked the main entrance, celebrating the process of unification. Some of the Reichstag's decorative sculptures, reliefs, and inscriptions were by sculptor Otto Lessing.