Medianeras. That’s the name given in Barcelona to the walls still standing after an adjacent house has fallen apart or has been destroyed (think real estate speculation.) The walls bravely stay there and reveal snippets of the history and intimacy of the defunct house: silhouette of staircases, wallpapers slowly peeling off, shadows of the wardrobes, remains of bathrooms, plugs, etc.
UPDATES (in case you don’t read the comments): Javier notes that “medianera” is a Spanish word for the wall that is shared with another building. It is not necessary for the second building to be not present.
Another reader informs that he started a sister group (the unconscious art of demolition) just a few days ago without knowing about the medianeras pool.
Image gallery and Flickr group about the medianeras.
Via elastico text by José Antonio Millán. Image of the post Marika: intervention in Barcelona by Swiss artist Marika.