San Agusti

While I'm pretty sure it occurs at least every Sunday, groups of people dancing the "Sardana," the traditional dance of Catalunya, may also occur on other days of the week. I think Sunday is the biggest day though, where many people come out to watch. It's really interesting to see, and a good way to really get the Catalan vibe, if you're actually interested in learning about local culture. The dancing in my pciture is being performed outside of the Catedral in the Barri Gotic (gothic quarter).