"[3] In the mid-twelfth century, the aristocratic Marescotti family of Siena, owners of a castle at the site, erected the tower that stands today next to the palace.
In 1506, the Piccolimini-Mandoli family acquired the building and refurbished the palace interiors, cortile, and loggia in a Renaissance style.
In 1770, the owner Marcantonio Saracini undertook a restoration of the building that lasted until 1824, when Galgano, his son, inherited it.
Preserving the original Gothic façade, the castle matches the characteristic curvature of this narrow medieval street.
Count Guido Chigi-Saracini, the castle's last owner, restored the building's exterior and interior with the help of architect Arturo Viligiardi (especially the rococo-style concert hall).