[sushimako]

Similarly, there is the "Karl Marx Hof"; a social housing complex in Vienna that was completed in 1930 and spans 1.1km, with a huge park in its midst.

https://en.wikipedia.org/wiki/Karl-Marx-Hof

https://goo.gl/maps/E1PvcZahSPVjk4RY9

[patricktlo]

Great video on it: https://youtu.be/vzGnyqpvwG8