San Lorenzo Cathedral, also known as Cattedrale di San Lorenzo, is a prominent Roman Catholic cathedral located in Genoa, Italy. It serves as the seat of the Archdiocese of Genoa and is dedicated to Saint Lawrence, the patron saint of the city. The cathedral features a mix of architectural styles, primarily Romanesque and Gothic, and is known for its striking black and white striped façade. Construction of the cathedral began in the 12th century and continued for several centuries, resulting in various additions and modifications. Inside, visitors can find beautiful chapels, intricate frescoes, and notable artworks, including the Holy Grail relic. The cathedral is a significant historical and cultural landmark in Genoa.