Take a guided walking tour of Siena and explore this UNESCO World Heritage Site's highlights. Visit the Duomo, also known as the Cathedral of the Assumption, or one of the Contrade Museums when the Duomo is closed on Sunday morning. Start your walking tour at the Duomo, and marvel at this masterpiece of Gothic architecture that contains famous works of art by Michelangelo, Donatello, and Bernini. On Sundays, enter the Contrade Museums instead, where the Palio horse race collections are preserved. Walk down Francigena street to admire the city's most important buildings and monuments, including the Monte dei Paschi, the oldest bank in Europe. Pass the beautiful Palazzo Tolomei and get a closer look at one of the finest Italian Gothic palaces. Conclude your walking tour in the monumental Piazza del Campo and experience the historical beating heart of the city where the famous Palio di Siena horse race takes place twice a year.