The medieval Tuscan city of Siena was one of the key regional Italian powers during the age of the commune (11th to 14th centuries). By the 13th century, the Republic of Siena had grown in wealth and territory to the point that it rivalled its neighbour Florence, with which it fought various regional wars and skirmishes. By the 16th century, Siena's apogee had expired, and it was absorbed into the Grand Duchy of Florence under Cosimo il Grande. Today, the city is a popular tourist hub and home to the successful Banca Monte dei Paschi di Siena.

 

Credit goes to Google for photogrammetry data.