Hundreds of exotic hot air balloons were seen in the sky during the 2017 International Balloon Festival in Leon City, Guanajuato State, Mexico on Friday. /Xinhua Photo

About 200 hot air balloons from 15 countries with different shapes and colors were on display in the event which runs from November 17 to 20. /Xinhua Photo

The streets and rooftops were thronged with people from all over the world enjoying the aerial ballet. The event also included music shows and a variety of performances. According to the Guanajuato tourism office, over 500,000 people are expected to visit the state during the fair this year. /Xinhua Photo