A Brick Wall Built On A Yambol Street - Why?

As I walked along the Yambol side streets I came across a brick wall that had been built that sticks out from a house wall. It sees to have no purpose there at all. Perhaps the Bulgarian owners started something that couldn’t be finished or is to be finished. The wall looks like it has been there for some time and it remains a mystery. I don’t find seeing thing like this strange anymore, but I might have done a few years ago here.