Discusses Barcelona, and 3x3 superblocks, and uses a 2xN illustration. Maybe its just me but the visual completely failed to make me believe Barca has 3x3 superblocks because it didn't show it.
Small note. Barcelona can be refered to as Barna or Bcn, but not Barça. Barça is the football club only.
Smaller note: Barcelona can be decomposed in three Catalan words (a happy accident): Bar, Cel, Ona, meaning Bar (yeah, this one is easy), Sky and Wave. Being a mediterranean city, fits quite well :)