The old one has 8 floors, the new one has 9 (or is it 10?) floors.
The old courthouse I thought had only six floors, but I looked it up and there are nine. I should have thought of that before, because the last case I tried was on the ninth floor of the old courthouse, in Judge Eldridge's courtroom.
The old courthouse is a rabbit warren, and it would be very easy for somebody to hide or escape.