San Petronio Basilica is a prominent church located in Bologna, Italy. It is dedicated to Saint Petronius, the patron saint of the city. Construction began in 1390, and the basilica is known for its impressive Gothic architecture and large size, making it one of the largest churches in the world. The basilica features a stunning façade made of brick and marble, with a distinctive unfinished section. Inside, visitors can admire beautiful frescoes, intricate chapels, and a remarkable wooden ceiling. The church also houses significant artworks, including pieces by renowned artists such as Giovanni Battista Cima and Pietro da Rimini.