La Crida by chance

So we turned up to Valencia and got out if the train at about 2. The hotel wasn't far so we walked it and about halfway there explosions start going off. The area we were in was dead, the streets dirty and graffiti everywhere. I thought we walked into Iraq! Huge fireworks were going off in the city just in front of us. Later thousands of people spilled out of the city center on their way home. We had no idea what was going on

Late that day after going for lunch and struggling to find anything open we got home and had a mini siesta. Outside our window we could hear noise and people singing with drums banging. Using trusty Twitter I searched for what was going on and found out at 8pm everyone was meeting at these towers at the top if the old city for some event.
So we got changed and finally got out then it was easy. Follow the crowd. Massive number of people were all walking to the same place do we followed. Along the way we were walking with a matching band, drumming and chanting the whole way. People were dressed up in costume or in colors of their local communities or churches. We got to the Torres de Serranos and I'm pretty sure there was already thousands of people there.
Music played over speakers as dancers hung from a crane dancing over the crowd. The Queen of the festival got on stage and did a speech then declared the Fallas Festival open. Crowd goes wild. Light go off, like all electricity in the area was cut off. It's dark. Then fireworks start going off. It was nuts. Some of the craziest fireworks I've seen.

So that was our random discovery of Valencia on day one. Pretty damn cool and totally unplanned.