The Rocca dei Papi binds its genesis, its development and also its decline Montefiascone relationships with various popes. In the period dating back to the barbarian invasions, the country was forced to strengthen the defenses that prevent environmental masonry anyone to break into the town. It was erected a great and mighty fortress with high walls, within which poured the inhabitants of the countryside. Soon it became a favorite destination of popes who were forced to flee the besieged Rome, chose it as the destination of their exile. This constant presence of clergymen of Montefiascone soon made a bishopric.