The 15th of August is a public holiday in Spain, being the Feast of the Assumption of the Virgin Mary. The Constitution says there is no State religion but the Spanish nation is founded on Catholicism. No Constituion could shake that off so easily.
This year's Fallas is extra especial. It's the first to be celebrated after the festivity was inscribed as Intangible Cultural Heritage of Humanity by the UNESCO
“The history of Spain is engraved on its tombstones”