Eyesore backyards

Thin walled, tenement houses, that are particles of the BCN, are built very close to each other with typical square spaces inside. Because this is not the front of a house, architects don´t care about how it looks. If you step into one of respectable, seven-floor houses, you see only nice marble walls and brass letterboxes...and only litlle unpleasant smell. But if you go to any flat, you´ll see whats behind it: severage systems right on the walls, millions miles of washing hung out, gas pipes, hudreds of mops, shoes (to be aired, huh?), ten years old dirt and all things you could imagine people drop from the windows. All covered with terrible fetor that is mixed from sewery fumes, paelia of 1st floor, 20 meters of 2nd floor washing, dead dove, aroma bathing of the worthy lady from 4th, hamburgers for next two months fried by nice athlete at 6th. And you, if you only open the window to the backyard, you are becoming the part of it.