Description:Pope Benedict donned a black and silver Mexican sombrero on Sunday (March 25) as his popemobile made its way through the streets of Guanajuato. The move elicited a roar from the crowd. The Pope also took a helicopter tour around Guanajuato before delivering an historic open-air mass. The pontiff was in the air for about 20 minutes viewing the Cristo Rey (Christ the King) statue as crowds gathered below for the main event.(1:50)