Main Tower in the Toyotomi Period- Height: less than 40 meters (estimate) Main Tower reconstructed in the Tokugawa Period- Height: about 58.5 meters [c.f.]Main Tower restored in the Showa Period-Height: 54.8 meters

The unprecedented large-scale work was carried out, and as the in the Toyotomi Period was completely buried in deep ground, the new Main Tower was constructed in another location and on a larger scale.