The entrance to the church is not free. However, one ticket allows you to visit all the parts of the Siena Cathedral, such as the church and Baptistery, the Piccolomini library, the Cathedral museum, and much more. For a more enriching experience, consider booking our Florence tour to Siena with an optional guided tour through the charming city of Siena, complete with a ticket to Siena Cathedral. With our knowledgeable tour guides, you get to discover the fascinating history behind every stone of this incredible Cathedral.