I've always thought that Markarth looked a lot like Orzammar from Dragon Age Origins. They seem to have similar architecture and they both have kind of a cramped, stony feel.
It's not a bad thing, because they're obviously still very different in other ways. I'm just curious if anyone else has noticed this or any other similarities between Skyrim and other things (that haven't already been mentioned a million times before coughWhiterunandEdorascough).
Markarth
http://images.wikia.com/elderscrolls/images/archive/f/fb/20120124002720!Markarth_3.png
Orzammar
http://web-vassets.ea.com/Assets/Richmedia/Image/Screenshots/dao%20%20pc%20orzammar%20s1.jpg?cb=1334003799