In all fairness to GRRM, it's common enough for authors who really get into their world-building. Between Perdido Street Station and The Scar, China Mieville probalby wrote about 100 paragraphs which all boiled down to "this city/borough/neighborhood's history of immigration gave its markets/architecture/streets a very chaotic, heterogeneous feel."
Now that I think about it, Transmetropolitan does basically the same thing with its backgrounds. Which is nice, because it doesn't require any break in the action.