In 1514, Arduino degli Arriguzzi was chosen as the architect to construct the dome. His proposal included a large dome resting upon the width between the side aisles, which necessitated larger transepts and apses. This led to a form of a Latin cross, which was said to outdo St. Peter's Basilica in Rome. The project was considered too complicated, and after building the first two pillars and two triangular pylons for the dome, the work was halted. According to legend, Pope Pius IV halted the "megalomaniac dream" and instead encouraged the construction of the Archiginnasio of Bologna.