Barrilonia, the house of rebelling people, is a very colourful house on the Rambla del Raval, near Botero’s Cat.
The name Barrilonia is a contraption of barrio, neighborhood area, and, of course, Babilonia, Babylon.
The house itself is a kind of political art and workshop center (here is their website, for those interested, in Catalan). It seems to be very cosmopolitan.
Several interesting graffitis on the house front, particularly this one.