During the Middle Ages, it was the house of the Aldobrandeschi family. It was almost entirely rebuilt in the early 20th century by the architect Lorenzo Porciatti. It is now a Neo-Gothic building with ogival mullioned windows and merlons in the upper part of the walls.
It houses the seat of the Province of Grosseto.
- Aldo Mazzolai, Guida della Maremma. Percorsi tra arte e natura (trans. Guide to Maremma. Paths through art and nature), Le Lettere Firenze, 1997;
- Grosseto. Storia ed Arte (trans. Grosseto. History and Art), Innocenti A., Grosseto, 1928, pp. 67–70
- Grosseto: briciole di storia (trans. Grosseto: crumbs of history), Innocenti E. e M., Grosseto, 1993, pp. 173–178