The Gradara and its fortified village is one of the best preserved medieval structures in Italy. The two walls that protect the fortress (the outermost of which stretches for almost 800 meters) makes it of great historical and architectural interest. As well as the keep, the main tower overlooking the entire valley. The successful location of the stronghold has transformed, since ancient times, a crossroads of traffic and people. Gradara was one of the main theaters of fighting between the militias of the Papal States and the turbulent families of Romagna and Marche and inextricably linked to the love story of Paolo and Francesca, immortalized in Canto V of Dante's Inferno.