From resignations to drownings and beheadings, the papacy is full of unusual and surprising moments.
Pope Benedict XVI stunned the Catholic world with news of his resignation in February 2013, but he's certainly not the first. Here's a look back at other unusual and surprising moments in the history of the papacy.
On the morning of April 19, 1995 Timothy McVeigh killed 168 people during the Oklahoma City bombing. Find out more about that tragedy here.