I wasn't feeling up to detail work today, so I went back to building the tower. I put together the top section and put the framing around the outer edges. Next step will be to cut and layout the interior beams.
As you can see in the second picture, I did the same thing with this one that I did with the last. The foam block on the bottom fits into the bottom section of the tower. Rather than gluing the pieces together, this will just sit in there so that it can be taken apart as needed.