Chianti territory with its hilly countryside of incomparable beauty lies in the heart of Tuscany. Administered by both the Provinces of Florence and Siena, during the Middle Ages it was harshly contested by these two rival cities until 1555 when the Medicis imposed their hegemony on all of Tuscany. It is difficult to trace its borders since only the mountains of Chianti in the East separate it from Upper Valdarno in a natural and neat way; the remaining territory fades into the hills of the Arbia, Elsa, Greve and Pesa rivers. Mediaeval villages, castles, churches, abbeys, monasteries, cottages and villas lie one after the other in a fantastic itinerary that exalts the activity and inventiveness of man; centuries of work have modelled the hills of this region and the alternation of the olive groves and the forests creates a harmony unique to the world.