I've seen many Ardennes building destroyed but only in books. And there are just so many about that particular battle that I would not know where to start. I can help you with buildings in one piece, because a lot of them have not changed that much since 1944, but you'd better off with books for destroyed houses. The Battle of the Bulge is not my main 'cup of tea' (I prefer the early WWII stuff) and I therefore have rather little pictorial references about that. There must be in this forum people who have what you want. I'll post a link to the Armor forum and we will see what come out of there!
Domi