Between Siesta and Fiesta

Fiesta is just one letter away from siesta. Together, these two phenomenons are at the heart of the Spanish culture. I'd like to write about the siesta every now and then, but the main aim of this blog is to talk about the fiesta. What are the most curious Spanish fiestas? Where are the best wine battles? Where do you find the strangest medieval rituals? Which city has the best Easter Processions? Which fiestas were recently forbidden and why? ¡Qúe lo pasen bien!