The young tourist was arrested Wednesday for carving his name on the marble wall of the Medieval cathedral.
He appeared in court Friday and paid a fine to have the damage repaired. He expressed his apologies to the judge, who nevertheless ordered him to leave the city immediately, Italy's ANSA news service said.
Toddler uninjured after being knocked over by Obama family dog
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'