The Cathedral of Siena is one of Italy's most spectacular examples of Roman-Gothic architecture, dazzling visitors with its striped marble facade and richly decorated interior. Step inside to admire masterpieces by Donatello, Michelangelo, and Pinturicchio, alongside the extraordinary inlaid marble floor, made up of 56 mosaic panels crafted over two centuries by 40 different artists. Explore the Piccolomini Library, home to precious frescoes and illuminated manuscripts, and the Duomo Nuovo. A truly unmissable stop for art, history, and architecture lovers visiting Siena.

The Piccolomini Library, inside Siena Cathedral, is one of the city's most dazzling hidden gems. Commissioned by Cardinal Francesco Piccolomini in honor of his uncle Pope Pius II, it houses a breathtaking series of frescoes by Pinturicchio, vividly depicting scenes from the pope's eventful life. The room also displays precious illuminated manuscripts and choir books collected over centuries. With its vibrant colors and intricate detail, it's a true Renaissance treasure not to be missed.