The Duomo di Napoli, or Naples Cathedral, is a prominent church located in the heart of Naples, Italy. It is dedicated to the city's patron saint, San Gennaro, and features a mix of architectural styles, primarily Gothic and Baroque. The cathedral was built in the 13th century and has undergone several renovations over the years. Inside, visitors can admire stunning artworks, including frescoes and sculptures. The cathedral is also famous for housing the relics of San Gennaro, which are displayed during the annual feast when the blood of the saint is said to miraculously liquefy, attracting many pilgrims and tourists.