There's another one in Warsaw, Poland, in the city's arguably most slumsiest estate comprised of three low-standard blocks of flats with no infrastructure:

http://free.art.pl/zmiana_organizacji_ruchu/Watts.html

I ran down the street real quick in Google Maps, it's 2140 Great Highway: http://goo.gl/maps/NZNAO

I just had another holy shit, it's the 21st century moment.