Here are 10 things to see in Siena during a trip: 1. The Duomo di Siena: a majestic Gothic cathedral with a beautiful ornate façade and a breathtaking floor covered in mosaics. 2. Piazza del Campo: Siena's main square, famous for its shell shape and the Palazzo Pubblico with the Torre del Mangia. 3. The Palazzo Pubblico: seat of Siena's municipal government, with a beautiful Council Chamber and a spectacular view from the Torre del Mangia. 4. The Basilica of San Domenico: a magnificent Gothic church, famous for containing the relic of the finger of St Catherine of Siena. 5. The Museo dell'Opera Metropolitana: houses a vast collection of works of art from the Duomo, including masterpieces by Donatello and Duccio di Buoninsegna. 6. The Palazzo Salimbeni: historical headquarters of Banca Monte dei Paschi di Siena, one of the oldest banks in the world, with a splendid façade and a small picture gallery. 7. The Palio di Siena: a horse race held twice a year (2 July and 16 August) in the Piazza del Campo, between the 17 contrade of Siena. 8. Santa Maria della Scala: a former hospital converted into a museum complex, with a vast collection of sacred art and a series of medieval rooms. 9. The Church of San Francesco: a Franciscan church with a beautiful cloister, housing the Basilica Cateriniana with the chapel of Santa Caterina. 10. The Palazzo Chigi Saracini: home of the Accademia Musicale Chigiana, with a magnificent façade and an interior rich in frescoes, it also houses the Museum of Instrumental Music. And to discover all the curiosities of the city without unnecessary research, try our free map. Try Secret Maps. Thousands of legends, ghost stories, art treasures and many wonders await you!