Although this looks like it's abandonned and far from any urban life, it is actually quite in the heart of the city, by the river, in the neighborhood of Holesovice. This former industrial area now presents a lot of different faces, from high end new housing buildings to this, with office buildings and standardized workers appartment buildings in between... It's also where Prague Market is, which is a huge area undergoing renovation* as well.
I'll post a lot of pictures of this part of the city, because it is where I live, and because I think it is largely underestimated and wrongly a victim of many prejudices :)
*read: "let's get rid of the "asian mess" and build ugly falsely-cute stalls instead, each bearing an obvious number proving the owner's registration"