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An escape route in case of siege to the city.
The main square of the city is considered one of the most beautiful in Italy.
The Roman Theater is being escavated, near Porta Romana also known as Porta Gemina for its gates in the west of the fortified town with its huge walls.
The Roman age fortress called "Fortezza Pia" in the upper part of the town, the walls and the bridges around the town.
Duomo's church and its Arringo square with Town Hall palace and archeological museum.
A most beautiful renaissance theater.