Hot air balloon races at the 1900 Paris World Fair. These events would take place in Vincennes, in the outskirts of Paris. There was an altitude contest which was won by Mr. Balsan - who reached an altitude of 8,357 meters in his hot air balloon. The same Mr. Balsan became famous for winning a contest involving both distance and duration; it took him 35 hours to reach Russia.
Original public domain image from Wikimedia Commons