I tried to make a building much larger than what I could actually handle. It looks about 50% done or so, but in reality its only about 10% done (if you account for building the interior). I've been doing this for quite a few months now, and I have got other things I need to do. I should have one more thing coming out, but that will be the last one for a while (I just need to take a little break, i hope you understand).
This build is about 425 blocks wide, 203 deep, and 134 tall (or 210-240 if I had finished it), and about 658,000 blocks