Step 1 : Introduction to the question "Europe's largest annual hot air balloon festival is held is this city?"
...The European Balloon Festival is the largest hot air balloon festival in Spain, and one of the largest in Europe. It takes place every year during the first fortnight of July in Igualada, Catalonia, Spain, a city located within 60 km from Barcelona. The festival lasts four days (Thursday to Sunday) and attracts thousands of spectators. It includes a hot air balloon competition and recreational exhibitions such as a night glow and fireworks. The flights take place early in the morning and late in the afternoon, when weather conditions are the optimal ones. It also offers visitors the opportunity to fly on a balloon, by booking a flight in advance.
