The conclave to choose a new pope is about to begin

Canadian Cardinal Thomas Christopher Collins (right) and Cardinal Francis Leo walk on Via della Conciliazione street near the Vatican, with St. Peter

As more than a billion Catholics around the world await the election of a new pope, all eyes will be on the Sistine Chapel, where 133 cardinals will begin the secretive process known as a conclave.

(Image credit: Dimitar Dilkoff)