File photo of Pope Benedict XVI arriving for the Immaculate Conception celebration prayer in Piazza di Spagna in downtown Rome

 
File photo of Pope Benedict XVI arriving for the Immaculate Conception celebration prayer in Piazza di Spagna in downtown Rome
Pope Benedict XVI waves as he arrives for the Immaculate Conception celebration prayer in Piazza di Spagna (Spain's Square) in downtown Rome in this December 8, 2011 file photo. REUTERS/Alessandro Bianchi/Files