Begins the Merce
The big moment finally arrived, ushered in by the dance of the enormous spinning bird, the minuet of the giant king and queen, the construction of the first of many human towers presided over by the very large people, and of course, some fire. Samples below:

And if you are fond of light shows that change the front of an actual building (in this case the Barcelona city hall at the Plaza San Jaime) of into a fantasy world in which solid stone changes form and four colored blobs cavort (and who isn't?), the Merce is the place for you. Actually it was really cool. If you're just going to watch one YouTube video today, make it this one. The whole thing lasted quite a while, but there are a few minutes worth in the video below: