A house in a medieval tower built between the 11th and 13th centuries, to which an adjacent structure, also intended for residential use, was added at the beginning of the 13th century. In the mid-13th century, the wealthy Rinuccini family, merchants of Florentine origin, built their Palace on one of the most important streets in the city center. The facade, among the best-preserved of medieval Siena and the most representative of the mid-13th century, extends across five vertical sections with openings distributed over as many levels.