The heavy bronze doors of the facade were made by different Florentine artists in the 17th century. Contrary to what might be thought, from the beginning the faithful entered the cathedral through the door of Saint Rainerius, found in the transept of the same name, which faces the bell tower. This was because the nobles of the city, who approached the cathedral by via Santa Maria, would find themselves precisely at this entrance. This door was cast about 1180 by Bonanno Pisano, and it is the only door not destroyed by the fire of 1595 that heavily damaged the cathedral.