Hot air ballooning has quickly become a craze in the tourism world. From Tuscany to Pushkar, the &lsquoexperience&rsquo isn&rsquot complete unless you jump aboard a balloon and drift on high for a bird&rsquos-eye view. Today, all balloons use an on-board heat source powered by propane to heat the air within the balloon for buoyancy. This idea was first developed in late-18th century France, when a spectacularly artistic 60,000 cubic foot hot air balloon was flown by the Montgolfier brothers Jacques-Étienne and Joseph-Michel on October 15, 1783. It was a tethered flight, and the piloted balloon rose to a height of 80ft, which was the length of the tether. It was a huge sensation, and sparked off a race of sorts. Using this design, named the La Montgolfière in their honour, a free manned flight was made by the science teacher Jean-François Pilâtre de Rozier and the Marquis d&rsquoArlandes on November 21, 1783 from the western outskirts of Paris. This balloon rose to a height of 3,000ft above the city and travelled a distance of 9km.