In Europe, and especially in England, you can often see such strange slopes in the corners of buildings. They are not for beauty. This is a form of "defensive architecture". The slopes were specially folded to prevent people from throwing on the walls of the houses. Which was still common in the 19th century - lots of pubs, few public toilets. So the people were mad at the fresh air, preferring to hide in corners where it was easier to hide from prying eyes. And it is not very convenient to relieve yourself on such a slope, because the splashes fly back on your feet and shoes. Goat at MAX.