It's "cash only" now for tourists who want to visit the Vatican's museums or buy souvenirs.
That's because Italy's Central Bank has blocked electronic payments, including credit cards, at the tiny city-state.
It's reported the Bank took the action because the Holy See hasn't yet fully complied with European Union safeguards against money laundering.
Naomi O'Leary is the Reuters Correspondant in Rome.
She told Premier's News Hour it's not the first time questions have been raised over the Vatican's finances: