Quote Originally Posted by gRomoZeka
BTW, "Какое это здание" sounds a little awkward in this context. The better choice is "Что это за здание (здания)?"
When you ask "Какое" it seems that you are interested in some of its qualities (an answer "It's yellow" or "It's small" would be quite natural).
Yes, "Какое это здание?" sounds like a bad Russian to me in this context. It reminds me the quote from "Red Heat": "Какие ваши доказательства?" (Also very bad Russian, although the phrase is gramatically correct, a native speaker wouldn't say so).