Unleash the secrets of Siena's majestic cathedral with an all-inclusive ticket, granting you access to every nook and cranny, minus the rooftop. Dive into the rich history of this architectural masterpiece, accompanied by an informative audio guide that brings the complex to life. As you step into the Duomo, be struck by its grandeur and marvel at the intricate mosaic floor beneath your feet. Admire iconic sculptures, including Donatello's "The Feast of Herod" and Michelangelo's "St. Paul", scattered throughout the cathedral. Next, venture into the Baptistery of San Giovanni, nestled within the Duomo, to marvel at the stunning Baptismal Font. From there, descend into the hidden Crypt, a mysterious underground space concealed for over seven centuries. Afterward, wander through the vibrant Piccolomini Library, where colorful frescoes adorn the walls, showcasing Pinturicchio's masterpiece, "The Life of Pope Pius II", in ten vivid scenes. The Museo dell'Opera awaits, housing an array of archaeological artifacts and artworks formerly part of the cathedral, including Giovanni Pisano's Gothic sculptures and paintings by Ambrogio and Pietro Lorenzetti. Next, visit the Oratory of San Bernardino, home to the Diocesan Museum of Religious Art, featuring an impressive collection of Siennese paintings from the 13th to the 18th century. Finally, cap off your visit with a climb to the Facciatone viewpoint, where the breathtaking panorama of Siena and the rolling Tuscan hills will leave you enchanted.