The Porta Grande (Great Gate), also known as the Boreale (Northern Gate) or di Napoli (Gate of Naples), is the most evident testament today of the city walls dating from the XV century. The current form, however, dates from 1784 when it was reconstructed by the feudal lord at the time, the Marquis Giuseppe Barretta. In fact, in 1784 the Marquis Barretta decided to completely dismantle that which remained of the Porta Grande after it had partially collapsed in 1764. The intervention of the people of Mesagne against the demolition forced the marquis to backtrack and rebuild it quickly. The restoration carried out in 1993 has highlighted two different types of stone used in its construction. It is possible that the lower part, which has a darker stone, is that which remained standing after the collapse in 1764, and the lighter part instead dates from the reconstruction which took place 1784. In any case, during the reconstruction the form of the tympanum was modified. In the painting of Saint Oronzo, housed in the Chiesa Matrice, we can see a depiction of the town and the form of the tympanum is clearly evident. On the arch the emblem of the Università stands out and in the centre of the tympanum the shield of a noble coat of arms.