Benefit from fast-track entry to Siena Cathedral and admire the stunning artwork and architecture of its interior. Walk along its ornate marble mosaic floor and visit the Piccolomini Library known for its collection of vibrant frescoes. Skip the line and enter the Cathedral and admire one of the foremost masterpieces of renaissance art and architecture in Italy. Gaze at elaborate altarpieces, a sculpture by Michelangelo, and all manner of ornate decorations scattered throughout its vast interior. Enter the Piccolomini Library, which contains a sprawling series of 10 frescoes by Pinturicchio chronicling the life of Pope Pius II. Gaze upwards at the domed ceiling, masterfully adorned with complex patterns and further scenes from the pope’s life.