Balloon (aeronautics) they are popular for balloonist sport activity. The first balloon which carried passengers used hot air to obtain buoyancy and was built by the brothers Josef and Etienne Montgolfier in Annonay, France in 1783: the first passenger flight was 19 September 1783, carrying a sheep, a duck, and a rooster. The first tethered manned balloon flight was by a larger Montgolfier balloon, probably on 15 October 1783. The first free balloon flight was by the same Montgolfier balloon on 21 November 1783. When heated, air expands, so a given volume of space contains less air. This makes it lighter and,
London International Hot Air Balloon Festival London International Hot Air Balloon Festival The London Hot-Air Balloon Festival (London Balloon Festival) was an annual hot-air balloon festival held in London, Ontario, Canada. The festival, which was held for the first time in 1984 and originally called the London Balloon "Fiesta", used to take place in Harris Park at the forks of the Thames River during Simcoe Day (first Monday in August) weekend. The sponsor of the festival was Sundance Balloons. Spectators could get very close to the balloons, as there was no fixed barricades separating the launch area. Several special-shaped balloons regularly attended, including the Canadian Flag,