The Rocket Window

It is common to see abandonded houses in Buenos Aires with the windows and doors cemented up, to stop people occupying the buildings when they are vacant.  It has always slightly disturbed me and I always wonder when I see one for sale, how do you inspect it?  Do they wait until people are interested in the property and then smash in the doors and windows?  Anyway, this rocket-ship street art is a pretty cool way to make the non-window less creepy and much more colourful.