The museum traces the development of the medieval landscape in the area between Amiata and Maremma, and the castle’s history dating back to its origin in the 10th century. The museum’s archaeological-artistic itinerary guides the visitor around the castle’s many medieval buildings and forts, explaining local stone processing techniques (peperino), and provides insights into the architecture and urban planning of the medieval historic centres of Amiata and Valle del Fiora. It also details the history of Aldobrandesca county and the archaeological finds from the site of Castel Vaiolo (10th century), which include the most important nucleus of ancient chestnuts recovered from the excavations in Tuscany. The explanatory texts are in Italian and English, and there is an activity path for school children as well as accessibility for the visually impaired.