Valiano is a frazione of the town of Montepulciano in the Province of Siena, on the border between the regions of Umbria and Tuscany. It was an ancient feudal castle which, due to its strategic position and the role played by the family of Del Pecora (the family of Cavalieri), was an outpost of Val di Chiana of great historical importance from thirteenth century until the establishment of Grand Duchy of Tuscany.

• "L'acqua di Montedoglio è più vicina: partiti oggi i lavori della rete irrigua della Valdichiana" (in Italian). Province of Siena. July 23, 2013. Archived from the original on March 5, 2016. Retrieved January 9, 2016.
• "Nel 2013 al via la realizzazione della rete irrigua della Valdichiana, alimentata da diga di Montedoglio" (in Italian). Province of Siena. December 11, 2012. Retrieved January 9, 2016.