The Collegiata di Castell'Arquato, also known as the Collegiata di Santa Maria, located in the Castell'Arquato, province of Piacenza, in Emilia-Romagna, Italy. A church was built at the site by 756, however, the building was rebuilt after the earthquake of 1117, and consecrated in 1122. The church facade was completed in the 15th-century; the bell-tower in the 13th-century. The Palazzo Pretorio adjacent to the church was built in 1293. Further reconstructions and additions occurred in 18th and 19th centuries. The chapel of St Joseph, built in 1630, was decorated by frescoes by Giacomo Guidotti.