Every day at 2:00pm, firecrackers rip through the Plaza del Ayuntamiento in a noisy event called la Mascleta. This concert of gunpowder is very popular, and involves different neighborhood groups competing for the most impressive volley, ending with the terremoto (earthquake), as hundreds of masclets explode simultaneously.
There are also a couple of days when the Valencianos take offerings of flowers to the Virgin Mary. There is a huge monument of Mary constructed in front of the Basilica and Cathedral, and the people bring flowers that are intricately placed on the monument to create a beautiful design. The people sing and dance in the streets and wear traditional costumes (which are AMAZING). My host sister showed me photographs of her dress from a couple of years ago. The colors are vibrant, and the designs are extremely intricate. All of the thread in her dress was made of real gold. The costumes are very expensive, and weigh a ton, but they are absolutely beautiful!
Historians say that the origins of the festival go back to the time when carpenters cleared out their workshops at the end of winter, throwing out odds and ends of wood and old candles and lighting them on the street on the day of Saint Joseph. I included a YouTube video below if you want to learn more or see what it looks like!