I'd like to find references to certain types of objects, but, I don't know what particularly they are called, What do you call This particular type of architecture? and is there any name for the sort of curvy designs?
Google's reverse image search shows the second is concept art for Halo 3. It doesn't seem to have anything to do with vampires, who tend to get either Gothic or Romanian. It reminds me of Ottoman, Persian, or Mughal, with their onionate tops, albeit nothing on Wikipedia looks quite right.