Siena Cathedral is the Cathedral of Santa Maria Assunta. Its marble-inlay and graffito floor, its Nicola Pisano pulpit, and its wider Cathedral-complex relationships require distinct reading. The Cathedral is within the UNESCO Historic Centre of Siena property, rather than a separately inscribed World Heritage site.
The Cathedral floor programme began in the 14th century and was completed in the 19th century. Nicola Pisano carved the pulpit between 1265 and 1268. Original façade sculptures by Giovanni Pisano are now displayed in the Museo dell'Opera, as is Duccio's Maestà.