The following is a timeline of the history of the city of Piacenza in the Emilia-Romagna region of Italy.
Portrait of Cristoforo Poggiali, 18th century historian of Piacenza
Roman Catholic Diocese of Piacenza–Bobbio
The Diocese of Piacenza-Bobbio is a Latin diocese of the Catholic Church. It has existed since 1989. In northern Italy, it is a suffragan of the Archdiocese of Modena-Nonantola. The historic Diocese of Piacenza was combined with the territory of the diocese of Bobbio-San Colombano, which was briefly united with the archdiocese of Genoa.
The Romanesque façade of the Duomo of Piacenza
Co-cathedral in Bobbio