The Great Balloon Festival of 2010 in Lewiston-Auburn Maine, USA featured the theme "Celebrating Maine Farms". The Festival originated in 1992 and typically draws 100,000 locals and tourists to the area. It starts with a parade and has many attractions from a carnival with rides to craft booths, sky divers, live entertainment and local foods served up by charitable community groups.
30 to 40 balloons usually participate. On this particular occasion it was thought to be too windy to launch. The Old McDonald's Farm balloon chose to inflate to test the conditions when this panorama was made. The balloon is operated by Storybook Balloons LLC and has been in balloon festivals worldwide. The overall height is 61 feet (18.6 meters) and it can lift 3-4 passengers plus the pilot. A crew of 15 people is needed for setup and operation.
For more information on the annual festival, see: http://www.greatfallsballoonfestival.org/