It's a late Romanesque and Gothic construction, built between 1369 and 1391. The church was enlarged by Count Raimono Orsini del Balzo, while his wife Maria d'Enghien was the promoter …
Overlooking St. Peter's Square, in the area of the historic center where once stood the main gate 'Porta Maggiore', the mother church dedicated to the patron saints Peter and Paul …