MOver 200 balloons and 300,000 people attend the four-day festival that takes place from Nov. 15 to 18, according to the local press Hot air balloons rise during the third day of the 2013 International Balloon Festival, carried out in the Metropolitan Park of the city of Leon, Guanajuato, Mexico, on Nov. 17, 2013. Over 200 balloons and 300,000 people attend the four-day festival that takes place from Nov. 15 to 18, according to the local press.