The document summarizes the Falles festival in Valencia, Spain. The Falles celebrate Saint Joseph and involve constructing and then burning monuments. There are theories that the festival originated in the Middle Ages when artisans would burn wooden artifacts in spring. A key part of the festival is La Mascletà, an explosive fireworks display that occurs daily and features a large one in the main plaza. The Mascletà is unique to Valencia and involves the Fallera Mayor giving the signal to begin the fireworks show.