Panzano
Panzano Castle was sacked after the Battle of Montaperti (1260) between the Florentines and the Sieneses, and destroyed again by the Visconti, Lords of Milan, at that time allied to the city of Siena. Something of its massive structure remains in the wing still standing with its fine gateway and part of the curtain walls.
The Pieve di San Leonino is worth a visit: a beautiful Romanesque church, probably built in the XIII century.