Really nice! How did you create it?
Hi, vault creation described in lecture 175 or 176 Linking external datablocks.
Using this method you can create similar roof for house like “cross intersection”
Thanks, but it’s NOT described in detail how you or he made that shape for the openings. I think that I need to make that shape for the windows as well. It looks like you used several vertices to make the shape. I’ve tried but I’m kind of stuck on this part. What am I missing? A step-by-step explanation would be most appreciated in this case! 
I got it!