Most of South America has those, but with different names. They are all on the hill because the land owners back in the day used to put the slaves and workers there because flat land was for farming, not for housing the servants.
If you ever go fly into Caracas, Venezuela at night and drive into town the slums there on the hills all have 1 white light. It looks like the hills have Christmas lights all over them and it is very beautiful... until the sun comes up.
BTW... I shot a lot of girls this trip from various favelas. It's also not nice I found out to use that "Favela" word in front on them. It's kind of rubbing it from their face that they are from the slums. At least that's what I was told.
