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Hot air balloons above Teotihuacan pyramid in Mexico

Henry Romero / Reuters

Hot air balloons float above the Pyramid of the Sun of Teotihuacan during the international hot air balloon festival outside Mexico City on Saturday.

Henry Romero / Reuters

People watch as hot air balloons float near the Pyramids of Teotihuacan during the international hot air balloon festival outside Mexico City.

Henry Romero / Reuters

People prepare a hot air balloon near the Pyramids of Teotihuacan.

 See more pictures of hot air balloons in PhotoBlog.