In the late 15th century, the bishop Giuliano della Rovere (later Pope Julius II) commissioned the rebuilding of the main church and town walls under the direction of the architect Baccio Pontelli.
U kasnom 15. stoljeću biskup Giuliano della Rovere, kasnije papa Julije II., je naručio obnovu glavne crkve i gradskih zidina pod upravom arhitekta Baccija Pontellija.