San Pietro in Cerro borders the following municipalities: Caorso, Cortemaggiore, Monticelli d'Ongina, Villanova sull'Arda.
Curtoni was born at San Pietro in Cerro, in the province of Piacenza, and entered the Italian science fiction world at a very young age.
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Villanova sull'Arda borders the following municipalities: Besenzone, Busseto, Castelvetro Piacentino, Cortemaggiore, Monticelli d'Ongina, Polesine Parmense, San Pietro in Cerro, Stagno Lombardo.