The Cathedral of San Berardo is a prominent Roman Catholic cathedral located in Teramo, Italy. It serves as the seat of the Archdiocese of Teramo-Atri and is dedicated to Saint Berardo, the patron saint of the city. The cathedral features a mix of architectural styles, primarily Romanesque and Gothic, reflecting its long history and various renovations. Construction of the cathedral began in the 12th century, and it was completed in the 14th century. Notable elements include its beautiful façade, intricate frescoes, and a stunning bell tower. The cathedral is a significant cultural and historical landmark in the region.