Pope Benedict XVI presides over his installation mass at the Basilica of St John Lateran May 7, 2005 in Rome, Italy. The Pope completed his papal installation at the cathedral he precided over as Bishop of Rome. (Photo by Franco Origlia/Getty Images)
Popes throughout history
A selection of the 265 popes who have served as head of the Catholic Church, from the recently retired Benedict XVI all the way back to St. Peter.