Photos: Shortest-reigning popes

With the resignation of Pope Benedict, take a look at history's shortest-reigning popes. <a href='http://www.cnn.com/2013/02/12/world/gallery/longest-reign-popes/index.html'>You can also view our list of the longest-reigning popes.</a><!-- -->
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</br>Pope Urban VII reigned for 13 calendar days in 1590, the shortest papal tenure in history.

With the resignation of Pope Benedict, take a look at history's shortest-reigning popes. You can also view our list of the longest-reigning popes.

Pope Urban VII reigned for 13 calendar days in 1590, the shortest papal tenure in history.