Batalla Naval de Vallecas
It's a wet and wild afternoon of pirate costumes, cheap plastic guns, and getting soaked once and once again. We go from the metro station walking the parade route through Vallecas while neighbors dump buckets of water on us and we try to hit them back. Being any water sharing device you have but the chinos in the area are lousy with replacements. If you bring dry clothes, put them in a bag. At the end of the parade route are bars and chinos for refreshments.