Lower halls; you can get interior shots like this by hiding (click the "eye" icon in the hierarchy panel) a piece of wall. This is necessary because in this shot, it looks as if you are standing very near the hexagonal pillar, but the Poser camera is twenty feet behind you, and outside of the exterior wall.

The intracity transporter:

Belatedly, I saw in a screengrab that the doorway openings in the lower hall are shaped rather like the transporter doors. I can make a replacement assembly which features that, and even if it's after release, y'all can simply delete the old lower hall partition assembly and add the new one.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5