 It has been alternatively claimed that he was either the architect who designed the Flavian Amphitheater in Rome (also known as the "Colosseum"), or Saint Gaudentius of Rimini.After an earthquake in 1456, the cathedral was rebuilt and in 1460 a Holy Door (Porta Santa) was added to the north-east facing wall of the cathedral by Bishop Jacopo.This is one of the few Holy Doors outside of Rome and is opened once every year during the feast of San Gaudenzio except during Jubilee Years when the Holy Doors in Rome are opened.